diff --git a/src/Microsoft.Graph.Core/Exceptions/Error.cs b/src/Microsoft.Graph.Core/Exceptions/Error.cs
index e39133cb2..e32ce3180 100644
--- a/src/Microsoft.Graph.Core/Exceptions/Error.cs
+++ b/src/Microsoft.Graph.Core/Exceptions/Error.cs
@@ -61,17 +61,16 @@ public class Error: IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the class
         /// </summary>
-        /// <typeparam name="T">The type of the class</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"code", (o,n) => { (o as Error).Code = n.GetStringValue(); } },
-                {"message", (o,n) => {(o as Error).Message = n.GetStringValue(); }},
-                {"target", (o,n) => {(o as Error).Target = n.GetStringValue(); }},
-                {"details", (o,n) => {(o as Error).Details = n.GetCollectionOfObjectValues<ErrorDetail>(ErrorDetail.CreateFromDiscriminatorValue).ToList(); }},
-                {"innerError", (o,n) => {(o as Error).InnerError = n.GetObjectValue<Error>(Error.CreateFromDiscriminatorValue); }}
+                {"code", (n) => { Code = n.GetStringValue(); } },
+                {"message", (n) => {Message = n.GetStringValue(); }},
+                {"target", (n) => {Target = n.GetStringValue(); }},
+                {"details", (n) => {Details = n.GetCollectionOfObjectValues<ErrorDetail>(ErrorDetail.CreateFromDiscriminatorValue).ToList(); }},
+                {"innerError", (n) => {InnerError = n.GetObjectValue<Error>(Error.CreateFromDiscriminatorValue); }}
             };
         }
 
diff --git a/src/Microsoft.Graph.Core/Exceptions/ErrorDetail.cs b/src/Microsoft.Graph.Core/Exceptions/ErrorDetail.cs
index 6d6a1d85a..44cbc1483 100644
--- a/src/Microsoft.Graph.Core/Exceptions/ErrorDetail.cs
+++ b/src/Microsoft.Graph.Core/Exceptions/ErrorDetail.cs
@@ -39,15 +39,14 @@ public class ErrorDetail : IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the class
         /// </summary>
-        /// <typeparam name="T">The type of the class</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"code", (o,n) => { (o as ErrorDetail).Code = n.GetStringValue(); } },
-                {"message", (o,n) => {(o as ErrorDetail).Message = n.GetStringValue(); }},
-                {"target", (o,n) => {(o as ErrorDetail).Target = n.GetStringValue(); }}
+                {"code", (n) => { Code = n.GetStringValue(); } },
+                {"message", (n) => {Message = n.GetStringValue(); }},
+                {"target", (n) => {Target = n.GetStringValue(); }}
             };
         }
 
diff --git a/src/Microsoft.Graph.Core/Exceptions/ErrorResponse.cs b/src/Microsoft.Graph.Core/Exceptions/ErrorResponse.cs
index 95eebfccd..3425d6d8a 100644
--- a/src/Microsoft.Graph.Core/Exceptions/ErrorResponse.cs
+++ b/src/Microsoft.Graph.Core/Exceptions/ErrorResponse.cs
@@ -26,13 +26,12 @@ public class ErrorResponse :IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the class
         /// </summary>
-        /// <typeparam name="T">The type of the class</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"error", (o,n) => { (o as ErrorResponse).Error = n.GetObjectValue<Error>(Error.CreateFromDiscriminatorValue); } }
+                {"error", (n) => { Error = n.GetObjectValue<Error>(Error.CreateFromDiscriminatorValue); } }
             };
         }
 
diff --git a/src/Microsoft.Graph.Core/Microsoft.Graph.Core.csproj b/src/Microsoft.Graph.Core/Microsoft.Graph.Core.csproj
index d1402dbc0..d861a7221 100644
--- a/src/Microsoft.Graph.Core/Microsoft.Graph.Core.csproj
+++ b/src/Microsoft.Graph.Core/Microsoft.Graph.Core.csproj
@@ -22,10 +22,9 @@
     <AssemblyOriginatorKeyFile>35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <VersionPrefix>3.0.0</VersionPrefix>
-    <VersionSuffix>preview.2</VersionSuffix>
+    <VersionSuffix>preview.3</VersionSuffix>
     <PackageReleaseNotes>
-        - Added support for vendor specific content types
-        - Added support for 204 no content responses
+        - [Breaking] Simplifies GetFieldDeserializers from IParsable
     </PackageReleaseNotes>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
@@ -100,11 +99,11 @@
   </None>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.IdentityModel.Protocols.OpenIdConnect" Version="6.16.0" />
+    <PackageReference Include="Microsoft.IdentityModel.Protocols.OpenIdConnect" Version="6.17.0" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.Kiota.Abstractions" Version="1.0.0-preview.2" />
+    <PackageReference Include="Microsoft.Kiota.Abstractions" Version="1.0.0-preview.3" />
     <PackageReference Include="Microsoft.Kiota.Authentication.Azure" Version="1.0.0-preview.1" />
-    <PackageReference Include="Microsoft.Kiota.Serialization.Json" Version="1.0.0-preview.1" />
+    <PackageReference Include="Microsoft.Kiota.Serialization.Json" Version="1.0.0-preview.2" />
     <PackageReference Include="Microsoft.Kiota.Serialization.Text" Version="1.0.0-preview.1" />
     <PackageReference Include="Microsoft.Kiota.Http.HttpClientLibrary" Version="1.0.0-preview.3" />
   </ItemGroup>
diff --git a/src/Microsoft.Graph.Core/Models/AsyncOperationStatus.cs b/src/Microsoft.Graph.Core/Models/AsyncOperationStatus.cs
index 9fb5ed1b7..d8da01772 100644
--- a/src/Microsoft.Graph.Core/Models/AsyncOperationStatus.cs
+++ b/src/Microsoft.Graph.Core/Models/AsyncOperationStatus.cs
@@ -36,15 +36,14 @@ public partial class AsyncOperationStatus: IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the <see cref="AsyncOperationStatus"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"operation", (o,n) => { (o as AsyncOperationStatus).Operation = n.GetStringValue(); } },
-                {"percentageComplete", (o,n) => { (o as AsyncOperationStatus).PercentageComplete = n.GetDoubleValue(); } },
-                {"status", (o,n) => { (o as AsyncOperationStatus).Status = n.GetStringValue(); } },
+                {"operation", (n) => { Operation = n.GetStringValue(); } },
+                {"percentageComplete", (n) => { PercentageComplete = n.GetDoubleValue(); } },
+                {"status", (n) => { Status = n.GetStringValue(); } },
             };
         }
 
diff --git a/src/Microsoft.Graph.Core/Models/UploadSession.cs b/src/Microsoft.Graph.Core/Models/UploadSession.cs
index 61ffbdc53..42c4ea02b 100644
--- a/src/Microsoft.Graph.Core/Models/UploadSession.cs
+++ b/src/Microsoft.Graph.Core/Models/UploadSession.cs
@@ -37,13 +37,13 @@ internal class UploadSession : IUploadSession
         /// <summary>
         /// The deserialization information for the current model
         /// </summary>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>> 
+            return new Dictionary<string, Action<IParseNode>> 
             {
-                {"expirationDateTime", (o,n) => { (o as UploadSession).ExpirationDateTime = n.GetDateTimeOffsetValue(); } },
-                {"nextExpectedRanges", (o,n) => { (o as UploadSession).NextExpectedRanges = n.GetCollectionOfPrimitiveValues<string>().ToList(); } },
-                {"uploadUrl", (o,n) => { (o as UploadSession).UploadUrl = n.GetStringValue(); } },
+                {"expirationDateTime", (n) => { ExpirationDateTime = n.GetDateTimeOffsetValue(); } },
+                {"nextExpectedRanges", (n) => { NextExpectedRanges = n.GetCollectionOfPrimitiveValues<string>().ToList(); } },
+                {"uploadUrl", (n) => { UploadUrl = n.GetStringValue(); } },
             };
         }
 
diff --git a/src/Microsoft.Graph.Core/Tasks/LargeFileUploadTask.cs b/src/Microsoft.Graph.Core/Tasks/LargeFileUploadTask.cs
index 16bd815ec..258bb693e 100644
--- a/src/Microsoft.Graph.Core/Tasks/LargeFileUploadTask.cs
+++ b/src/Microsoft.Graph.Core/Tasks/LargeFileUploadTask.cs
@@ -60,11 +60,11 @@ public LargeFileUploadTask(IParsable uploadSession, Stream uploadStream,  int ma
         /// <exception cref="NotImplementedException"></exception>
         private IUploadSession ExtractSessionFromParsable(IParsable uploadSession)
         {
-            if (!uploadSession.GetFieldDeserializers<IParsable>().ContainsKey("expirationDateTime"))
+            if (!uploadSession.GetFieldDeserializers().ContainsKey("expirationDateTime"))
                 throw new ArgumentException("The Parsable does not contain the 'expirationDateTime' property");
-            if (!uploadSession.GetFieldDeserializers<IParsable>().ContainsKey("nextExpectedRanges"))
+            if (!uploadSession.GetFieldDeserializers().ContainsKey("nextExpectedRanges"))
                 throw new ArgumentException("The Parsable does not contain the 'nextExpectedRanges' property");
-            if (!uploadSession.GetFieldDeserializers<IParsable>().ContainsKey("uploadUrl"))
+            if (!uploadSession.GetFieldDeserializers().ContainsKey("uploadUrl"))
                 throw new ArgumentException("The Parsable does not contain the 'uploadUrl' property");
 
             var uploadSessionType = uploadSession.GetType();
diff --git a/src/Microsoft.Graph.Core/Tasks/PageIterator.cs b/src/Microsoft.Graph.Core/Tasks/PageIterator.cs
index 12df1b762..248884928 100644
--- a/src/Microsoft.Graph.Core/Tasks/PageIterator.cs
+++ b/src/Microsoft.Graph.Core/Tasks/PageIterator.cs
@@ -61,7 +61,7 @@ public static PageIterator<TEntity, TCollectionPage> CreatePageIterator(IBaseCli
             if (callback == null)
                 throw new ArgumentNullException(nameof(callback));
 
-            if (!page.GetFieldDeserializers<IParsable>().ContainsKey("value"))
+            if (!page.GetFieldDeserializers().ContainsKey("value"))
                 throw new ArgumentException("The Parsable does not contain a collection property");
 
             var pageItems = ExtractEntityListFromParsable(page);
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/AbstractEntityType.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/AbstractEntityType.cs
index 683031253..24f205909 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/AbstractEntityType.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/AbstractEntityType.cs
@@ -26,13 +26,12 @@ public class AbstractEntityType: IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the class
         /// </summary>
-        /// <typeparam name="T">The type to use</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"id", (o,n) => { (o as AbstractEntityType).Id = n.GetStringValue(); } }
+                {"id", (n) => { Id = n.GetStringValue(); } }
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DateTestClass.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DateTestClass.cs
index f646d00ad..d9318bb54 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DateTestClass.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DateTestClass.cs
@@ -43,15 +43,14 @@ public class DateTestClass: IParsable
         /// <summary>
         /// Gets the field deserializers for the class
         /// </summary>
-        /// <typeparam name="T">The type to use</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"nullableDate", (o,n) => { (o as DateTestClass).NullableDate = n.GetDateValue(); } },
-                {"dateCollection", (o,n) => { (o as DateTestClass).DateCollection = n.GetCollectionOfPrimitiveValues<Date?>(); } },
-                {"invalidType", (o,n) => { (o as DateTestClass).InvalidType = n.GetIntValue(); } },
+                {"nullableDate", (n) => { NullableDate = n.GetDateValue(); } },
+                {"dateCollection", (n) => { DateCollection = n.GetCollectionOfPrimitiveValues<Date?>(); } },
+                {"invalidType", (n) => { InvalidType = n.GetIntValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DerivedTypeClass.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DerivedTypeClass.cs
index 2ef2cd90f..a02d5fac8 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DerivedTypeClass.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/DerivedTypeClass.cs
@@ -36,16 +36,15 @@ public class DerivedTypeClass : AbstractEntityType, IParsable, IAdditionalDataHo
         /// <summary>
         /// Gets the field deserializers for the class
         /// </summary>
-        /// <typeparam name="T">The type to use</typeparam>
         /// <returns></returns>
-        public new IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public new IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>(base.GetFieldDeserializers<T>())
+            return new Dictionary<string, Action<IParseNode>>(base.GetFieldDeserializers())
             {
-                {"enumType", (o,n) => { (o as DerivedTypeClass).EnumType = n.GetEnumValue<EnumType>(); } },
-                {"name", (o,n) => { (o as DerivedTypeClass).Name = n.GetStringValue(); } },
-                {"memorableDates", (o,n) => { (o as DerivedTypeClass).MemorableDates = n.GetCollectionOfObjectValues<DateTestClass>(DateTestClass.CreateFromDiscriminatorValue); } },
-                {"link", (o,n) => { (o as DerivedTypeClass).WebUrl = n.GetStringValue(); } },
+                {"enumType", (n) => { EnumType = n.GetEnumValue<EnumType>(); } },
+                {"name", (n) => { Name = n.GetStringValue(); } },
+                {"memorableDates", (n) => { MemorableDates = n.GetCollectionOfObjectValues<DateTestClass>(DateTestClass.CreateFromDiscriminatorValue); } },
+                {"link", (n) => { WebUrl = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestAttendee.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestAttendee.cs
index 1f1fad708..39d9115ae 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestAttendee.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestAttendee.cs
@@ -21,11 +21,10 @@ public TestAttendee()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestAttendee"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public new IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public new IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>(base.GetFieldDeserializers<T>())
+            return new Dictionary<string, Action<IParseNode>>(base.GetFieldDeserializers())
             {
             };
         }
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChangeNotificationEncryptedContent.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChangeNotificationEncryptedContent.cs
index fed6de4d4..30b849e12 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChangeNotificationEncryptedContent.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChangeNotificationEncryptedContent.cs
@@ -53,17 +53,16 @@ public class TestChangeNotificationEncryptedContent : IDecryptableContent, IPars
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestChangeNotificationEncryptedContent"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"data", (o,n) => { (o as TestChangeNotificationEncryptedContent).Data = n.GetStringValue(); } },
-                {"dataKey", (o,n) => { (o as TestChangeNotificationEncryptedContent).DataKey = n.GetStringValue(); } },
-                {"dataSignature", (o,n) => { (o as TestChangeNotificationEncryptedContent).DataSignature = n.GetStringValue(); } },
-                {"encryptionCertificateId", (o,n) => { (o as TestChangeNotificationEncryptedContent).EncryptionCertificateId = n.GetStringValue(); } },
-                {"encryptionCertificateThumbprint", (o,n) => { (o as TestChangeNotificationEncryptedContent).EncryptionCertificateThumbprint = n.GetStringValue(); } },
+                {"data", (n) => { Data = n.GetStringValue(); } },
+                {"dataKey", (n) => { DataKey = n.GetStringValue(); } },
+                {"dataSignature", (n) => { DataSignature = n.GetStringValue(); } },
+                {"encryptionCertificateId", (n) => { EncryptionCertificateId = n.GetStringValue(); } },
+                {"encryptionCertificateThumbprint", (n) => { EncryptionCertificateThumbprint = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChatMessage.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChatMessage.cs
index 112f79941..1f8c6dd60 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChatMessage.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestChatMessage.cs
@@ -48,17 +48,16 @@ public class TestChatMessage: IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestChatMessage"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"chatId", (o,n) => { (o as TestChatMessage).ChatId = n.GetStringValue(); } },
-                {"createdDateTime", (o,n) => { (o as TestChatMessage).CreatedDateTime = n.GetDateTimeOffsetValue(); } },
-                {"deletedDateTime", (o,n) => { (o as TestChatMessage).DeletedDateTime = n.GetDateTimeOffsetValue(); } },
-                {"etag", (o,n) => { (o as TestChatMessage).Etag = n.GetStringValue(); } },
-                {"body", (o,n) => { (o as TestChatMessage).Body = n.GetObjectValue<TestItemBody>(TestItemBody.CreateFromDiscriminatorValue); } },
+                {"chatId", (n) => { ChatId = n.GetStringValue(); } },
+                {"createdDateTime", (n) => { CreatedDateTime = n.GetDateTimeOffsetValue(); } },
+                {"deletedDateTime", (n) => { DeletedDateTime = n.GetDateTimeOffsetValue(); } },
+                {"etag", (n) => { Etag = n.GetStringValue(); } },
+                {"body", (n) => { Body = n.GetObjectValue<TestItemBody>(TestItemBody.CreateFromDiscriminatorValue); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDateTimeTimeZone.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDateTimeTimeZone.cs
index 176e044b6..43230e431 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDateTimeTimeZone.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDateTimeTimeZone.cs
@@ -46,15 +46,14 @@ public TestDateTimeTimeZone()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestDateTimeTimeZone"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"dateTime", (o,n) => { (o as TestDateTimeTimeZone).DateTime = n.GetStringValue(); } },
-                {"timeZone", (o,n) => { (o as TestDateTimeTimeZone).TimeZone = n.GetStringValue(); } },
-                {"@odata.type", (o,n) => { (o as TestDateTimeTimeZone).ODataType = n.GetStringValue(); } },
+                {"dateTime", (n) => { DateTime = n.GetStringValue(); } },
+                {"timeZone", (n) => { TimeZone = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDrive.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDrive.cs
index dd6a7b6e1..4d16b6300 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDrive.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDrive.cs
@@ -43,15 +43,14 @@ public TestDrive()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestDrive"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestDrive).ODataType = n.GetStringValue(); } },
-                {"id", (o,n) => { (o as TestDrive).Id = n.GetStringValue(); } },
-                {"name", (o,n) => { (o as TestDrive).Name = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"id", (n) => { Id = n.GetStringValue(); } },
+                {"name", (n) => { Name = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDriveItem.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDriveItem.cs
index af8de04ff..d5117c77a 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDriveItem.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestDriveItem.cs
@@ -54,16 +54,15 @@ public TestDriveItem()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestDriveItem"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"id", (o,n) => { (o as TestDriveItem).Id = n.GetStringValue(); } },
-                {"@odata.type", (o,n) => { (o as TestDriveItem).ODataType = n.GetStringValue(); } },
-                {"name", (o,n) => { (o as TestDriveItem).Name = n.GetStringValue(); } },
-                {"size", (o,n) => { (o as TestDriveItem).Size = n.GetLongValue(); } }
+                {"id", (n) => { Id = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"name", (n) => { Name = n.GetStringValue(); } },
+                {"size", (n) => { Size = n.GetLongValue(); } }
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEmailAddress.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEmailAddress.cs
index e7686c174..2e40bfb39 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEmailAddress.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEmailAddress.cs
@@ -46,15 +46,14 @@ public TestEmailAddress()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestEmailAddress"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestEmailAddress).ODataType = n.GetStringValue(); } },
-                {"address", (o,n) => { (o as TestEmailAddress).Address = n.GetStringValue(); } },
-                {"name", (o,n) => { (o as TestEmailAddress).Name = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"address", (n) => { Address = n.GetStringValue(); } },
+                {"name", (n) => { Name = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEvent.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEvent.cs
index 9a9337d91..5c71c0c7e 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEvent.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEvent.cs
@@ -72,19 +72,18 @@ public TestEvent()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestEvent"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestEvent).ODataType = n.GetStringValue(); } },
-                {"id", (o,n) => { (o as TestEvent).Id = n.GetStringValue(); } },
-                {"subject", (o,n) => { (o as TestEvent).Subject = n.GetStringValue(); } },
-                {"body", (o,n) => { (o as TestEvent).Body = n.GetObjectValue<TestItemBody>(TestItemBody.CreateFromDiscriminatorValue); } },
-                {"end", (o,n) => { (o as TestEvent).End = n.GetObjectValue<TestDateTimeTimeZone>(TestDateTimeTimeZone.CreateFromDiscriminatorValue); } },
-                {"start", (o,n) => { (o as TestEvent).Start = n.GetObjectValue<TestDateTimeTimeZone>(TestDateTimeTimeZone.CreateFromDiscriminatorValue); } },
-                {"attendees", (o,n) => { (o as TestEvent).Attendees = n.GetCollectionOfObjectValues<TestAttendee>(TestAttendee.CreateFromDiscriminatorValue); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"id", (n) => { Id = n.GetStringValue(); } },
+                {"subject", (n) => { Subject = n.GetStringValue(); } },
+                {"body", (n) => { Body = n.GetObjectValue<TestItemBody>(TestItemBody.CreateFromDiscriminatorValue); } },
+                {"end", (n) => { End = n.GetObjectValue<TestDateTimeTimeZone>(TestDateTimeTimeZone.CreateFromDiscriminatorValue); } },
+                {"start", (n) => { Start = n.GetObjectValue<TestDateTimeTimeZone>(TestDateTimeTimeZone.CreateFromDiscriminatorValue); } },
+                {"attendees", (n) => { Attendees = n.GetCollectionOfObjectValues<TestAttendee>(TestAttendee.CreateFromDiscriminatorValue); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventDeltaCollectionResponse.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventDeltaCollectionResponse.cs
index 650c0aef2..30849afa7 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventDeltaCollectionResponse.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventDeltaCollectionResponse.cs
@@ -32,14 +32,13 @@ public class TestEventDeltaCollectionResponse: IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestEventDeltaCollectionResponse"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.nextLink", (o,n) => { (o as TestEventDeltaCollectionResponse).NextLink = n.GetStringValue(); } },
-                {"value", (o,n) => { (o as TestEventDeltaCollectionResponse).Value = n.GetCollectionOfObjectValues<TestEvent>(TestEvent.CreateFromDiscriminatorValue).ToList(); } },
+                {"@odata.nextLink", (n) => { NextLink = n.GetStringValue(); } },
+                {"value", (n) => { Value = n.GetCollectionOfObjectValues<TestEvent>(TestEvent.CreateFromDiscriminatorValue).ToList(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventItem.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventItem.cs
index 54e3165a2..0851cf4e2 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventItem.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventItem.cs
@@ -43,31 +43,31 @@ public class TestEventItem : IParsable, IAdditionalDataHolder
         /// <summary>
         /// The deserialization information for the current model
         /// </summary>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>() {
-                {"allowNewTimeProposals", (o,n) => { (o as TestEventItem).AllowNewTimeProposals = n.GetBoolValue(); } },
-                {"bodyPreview", (o,n) => { (o as TestEventItem).BodyPreview = n.GetStringValue(); } },
-                {"hasAttachments", (o,n) => { (o as TestEventItem).HasAttachments = n.GetBoolValue(); } },
-                {"hideAttendees", (o,n) => { (o as TestEventItem).HideAttendees = n.GetBoolValue(); } },
-                {"iCalUId", (o,n) => { (o as TestEventItem).ICalUId = n.GetStringValue(); } },
-                {"instances", (o,n) => { (o as TestEventItem).Instances = n.GetCollectionOfObjectValues<TestEventItem>(TestEventItem.CreateFromDiscriminatorValue).ToList(); } },
-                {"isAllDay", (o,n) => { (o as TestEventItem).IsAllDay = n.GetBoolValue(); } },
-                {"isCancelled", (o,n) => { (o as TestEventItem).IsCancelled = n.GetBoolValue(); } },
-                {"isDraft", (o,n) => { (o as TestEventItem).IsDraft = n.GetBoolValue(); } },
-                {"isOnlineMeeting", (o,n) => { (o as TestEventItem).IsOnlineMeeting = n.GetBoolValue(); } },
-                {"isOrganizer", (o,n) => { (o as TestEventItem).IsOrganizer = n.GetBoolValue(); } },
-                {"isReminderOn", (o,n) => { (o as TestEventItem).IsReminderOn = n.GetBoolValue(); } },
-                {"onlineMeetingUrl", (o,n) => { (o as TestEventItem).OnlineMeetingUrl = n.GetStringValue(); } },
-                {"originalEndTimeZone", (o,n) => { (o as TestEventItem).OriginalEndTimeZone = n.GetStringValue(); } },
-                {"originalStart", (o,n) => { (o as TestEventItem).OriginalStart = n.GetDateTimeOffsetValue(); } },
-                {"originalStartTimeZone", (o,n) => { (o as TestEventItem).OriginalStartTimeZone = n.GetStringValue(); } },
-                {"reminderMinutesBeforeStart", (o,n) => { (o as TestEventItem).ReminderMinutesBeforeStart = n.GetIntValue(); } },
-                {"responseRequested", (o,n) => { (o as TestEventItem).ResponseRequested = n.GetBoolValue(); } },
-                {"seriesMasterId", (o,n) => { (o as TestEventItem).SeriesMasterId = n.GetStringValue(); } },
-                {"subject", (o,n) => { (o as TestEventItem).Subject = n.GetStringValue(); } },
-                {"transactionId", (o,n) => { (o as TestEventItem).TransactionId = n.GetStringValue(); } },
-                {"webLink", (o,n) => { (o as TestEventItem).WebLink = n.GetStringValue(); } },
+            return new Dictionary<string, Action<IParseNode>>() {
+                {"allowNewTimeProposals", (n) => { AllowNewTimeProposals = n.GetBoolValue(); } },
+                {"bodyPreview", (n) => { BodyPreview = n.GetStringValue(); } },
+                {"hasAttachments", (n) => { HasAttachments = n.GetBoolValue(); } },
+                {"hideAttendees", (n) => { HideAttendees = n.GetBoolValue(); } },
+                {"iCalUId", (n) => { ICalUId = n.GetStringValue(); } },
+                {"instances", (n) => { Instances = n.GetCollectionOfObjectValues<TestEventItem>(TestEventItem.CreateFromDiscriminatorValue).ToList(); } },
+                {"isAllDay", (n) => { IsAllDay = n.GetBoolValue(); } },
+                {"isCancelled", (n) => { IsCancelled = n.GetBoolValue(); } },
+                {"isDraft", (n) => { IsDraft = n.GetBoolValue(); } },
+                {"isOnlineMeeting", (n) => { IsOnlineMeeting = n.GetBoolValue(); } },
+                {"isOrganizer", (n) => { IsOrganizer = n.GetBoolValue(); } },
+                {"isReminderOn", (n) => { IsReminderOn = n.GetBoolValue(); } },
+                {"onlineMeetingUrl", (n) => { OnlineMeetingUrl = n.GetStringValue(); } },
+                {"originalEndTimeZone", (n) => { OriginalEndTimeZone = n.GetStringValue(); } },
+                {"originalStart", (n) => { OriginalStart = n.GetDateTimeOffsetValue(); } },
+                {"originalStartTimeZone", (n) => { OriginalStartTimeZone = n.GetStringValue(); } },
+                {"reminderMinutesBeforeStart", (n) => { ReminderMinutesBeforeStart = n.GetIntValue(); } },
+                {"responseRequested", (n) => { ResponseRequested = n.GetBoolValue(); } },
+                {"seriesMasterId", (n) => { SeriesMasterId = n.GetStringValue(); } },
+                {"subject", (n) => { Subject = n.GetStringValue(); } },
+                {"transactionId", (n) => { TransactionId = n.GetStringValue(); } },
+                {"webLink", (n) => { WebLink = n.GetStringValue(); } },
             };
         }
         /// <summary>
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventsResponse.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventsResponse.cs
index 56d1e4609..316aed074 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventsResponse.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestEventsResponse.cs
@@ -24,11 +24,11 @@ public TestEventsResponse()
         /// <summary>
         /// The deserialization information for the current model
         /// </summary>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>> {
-                {"@odata.nextLink", (o,n) => { (o as TestEventsResponse).NextLink = n.GetStringValue(); } },
-                {"value", (o,n) => { (o as TestEventsResponse).Value = n.GetCollectionOfObjectValues<TestEventItem>(TestEventItem.CreateFromDiscriminatorValue).ToList(); } },
+            return new Dictionary<string, Action<IParseNode>> {
+                {"@odata.nextLink", (n) => { NextLink = n.GetStringValue(); } },
+                {"value", (n) => { Value = n.GetCollectionOfObjectValues<TestEventItem>(TestEventItem.CreateFromDiscriminatorValue).ToList(); } },
             };
         }
         /// <summary>
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestItemBody.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestItemBody.cs
index 7e1d6d9ec..85a6c4792 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestItemBody.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestItemBody.cs
@@ -46,15 +46,14 @@ public TestItemBody()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestItemBody"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestItemBody).ODataType = n.GetStringValue(); } },
-                {"contentType", (o,n) => { (o as TestItemBody).ContentType = n.GetEnumValue<TestBodyType>(); } },
-                {"content", (o,n) => { (o as TestItemBody).Content = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"contentType", (n) => { ContentType = n.GetEnumValue<TestBodyType>(); } },
+                {"content", (n) => { Content = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestNotebook.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestNotebook.cs
index f754e2b36..5754dff63 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestNotebook.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestNotebook.cs
@@ -43,15 +43,14 @@ public TestNoteBook()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestNoteBook"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestNoteBook).ODataType = n.GetStringValue(); } },
-                {"id", (o,n) => { (o as TestNoteBook).Id = n.GetStringValue(); } },
-                {"displayName", (o,n) => { (o as TestNoteBook).DisplayName = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"id", (n) => { Id = n.GetStringValue(); } },
+                {"displayName", (n) => { DisplayName = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestRecipient.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestRecipient.cs
index 422ac5c0a..87e719f59 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestRecipient.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestRecipient.cs
@@ -37,14 +37,13 @@ public TestRecipient()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestRecipient"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestRecipient).ODataType = n.GetStringValue(); } },
-                {"emailAddress", (o,n) => { (o as TestRecipient).EmailAddress = n.GetObjectValue<TestEmailAddress>(TestEmailAddress.CreateFromDiscriminatorValue); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"emailAddress", (n) => { EmailAddress = n.GetObjectValue<TestEmailAddress>(TestEmailAddress.CreateFromDiscriminatorValue); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestResourceData.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestResourceData.cs
index 2896fbc01..61b13b2ed 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestResourceData.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestResourceData.cs
@@ -27,13 +27,12 @@ public partial class TestResourceData : IParsable, IAdditionalDataHolder
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestResourceData"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"@odata.type", (o,n) => { (o as TestResourceData).ODataType = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestSubscription.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestSubscription.cs
index 0a4bb5d21..9dab1c58b 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestSubscription.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestSubscription.cs
@@ -24,13 +24,12 @@ public class TestSubscription : IEncryptableSubscription,IParsable, IAdditionalD
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestSubscription"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"encryptionCertificate", (o,n) => { (o as TestSubscription).EncryptionCertificate = n.GetStringValue(); } },
+                {"encryptionCertificate", (n) => { EncryptionCertificate = n.GetStringValue(); } },
             };
         }
 
diff --git a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestUser.cs b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestUser.cs
index abf80db2f..fac51fad4 100644
--- a/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestUser.cs
+++ b/tests/Microsoft.Graph.DotnetCore.Core.Test/TestModels/ServiceModels/TestUser.cs
@@ -72,19 +72,18 @@ public TestUser()
         /// <summary>
         /// Gets the field deserializers for the <see cref="TestUser"/> instance
         /// </summary>
-        /// <typeparam name="T">The type to deserialize</typeparam>
         /// <returns></returns>
-        public IDictionary<string, Action<T, IParseNode>> GetFieldDeserializers<T>()
+        public IDictionary<string, Action<IParseNode>> GetFieldDeserializers()
         {
-            return new Dictionary<string, Action<T, IParseNode>>
+            return new Dictionary<string, Action<IParseNode>>
             {
-                {"id", (o,n) => { (o as TestUser).Id = n.GetStringValue(); } },
-                {"@odata.type", (o,n) => { (o as TestUser).ODataType = n.GetStringValue(); } },
-                {"givenName", (o,n) => { (o as TestUser).GivenName = n.GetStringValue(); } },
-                {"displayName", (o,n) => { (o as TestUser).DisplayName = n.GetStringValue(); } },
-                {"state", (o,n) => { (o as TestUser).State = n.GetStringValue(); } },
-                {"surname", (o,n) => { (o as TestUser).Surname = n.GetStringValue(); } },
-                {"eventDeltas", (o,n) => { (o as TestUser).EventDeltas = n.GetCollectionOfObjectValues<TestEvent>(TestEvent.CreateFromDiscriminatorValue).ToList(); } },
+                {"id", (n) => { Id = n.GetStringValue(); } },
+                {"@odata.type", (n) => { ODataType = n.GetStringValue(); } },
+                {"givenName", (n) => { GivenName = n.GetStringValue(); } },
+                {"displayName", (n) => { DisplayName = n.GetStringValue(); } },
+                {"state", (n) => { State = n.GetStringValue(); } },
+                {"surname", (n) => { Surname = n.GetStringValue(); } },
+                {"eventDeltas", (n) => { EventDeltas = n.GetCollectionOfObjectValues<TestEvent>(TestEvent.CreateFromDiscriminatorValue).ToList(); } },
             };
         }