improve readability

src/Facility.LanguageServer/FsdDefinitionUtility.cs

@@ -23,7 +23,9 @@ from field in service.GetDescendants().OfType<ServiceFieldInfo>()
 		public static IEnumerable<Location> GetReferenceLocationsForMemberAtPosition(this ServiceInfo service, DocumentUri uri, Position requestPosition)
 		{
 			var members = service.GetDescendants().OfType<ServiceMemberInfo>().ToList().AsReadOnly();
-			var memberNameAtPosition = members
+
+			// memberNameAtPosition will be null if the cursor is on a field type name.
+			var memberNameAtCursor = members
 				.Select(member =>
 				{
 					var part = member.GetPart(ServicePartKind.Name);
@@ -36,7 +38,9 @@ public static IEnumerable<Location> GetReferenceLocationsForMemberAtPosition(thi
 				.FirstOrDefault();
 
 			var fields = service.GetDescendants().OfType<ServiceFieldInfo>().ToList().AsReadOnly();
-			var fieldTypeNameAtPosition = fields
+
+			// fieldTypeNameAtPosition will be null if the cursor is on a member name.
+			var fieldTypeNameAtCursor = fields
 				.Select(field =>
 				{
 					var part = field.GetPart(ServicePartKind.TypeName);
@@ -56,7 +60,7 @@ public static IEnumerable<Location> GetReferenceLocationsForMemberAtPosition(thi
 
 					return new { part, typeName };
 				})
-				.Where(x => x.part != null && (x.typeName == memberNameAtPosition || x.typeName == fieldTypeNameAtPosition))
+				.Where(x => x.part != null && (x.typeName == memberNameAtCursor|| x.typeName == fieldTypeNameAtCursor))
 				.Select(x => new Location()
 				{
 					Uri = uri,