Improve getFileInfo function

gradle.properties

@@ -1,3 +1,3 @@
 group=io.ballerinax.slack
-version=2.0.0
+version=2.0.1
 ballerinaLangVersion=2.0.0-beta.3

slack/Ballerina.toml

@@ -1,15 +1,15 @@
 [package]
 org= "ballerinax"
 name= "slack"
-version= "2.0.0"
+version= "2.0.1"
 export= ["slack", "slack.listener"]
 license= ["Apache-2.0"]
 authors = ["Ballerina"]
 keywords = ["Communication/Team Chat", "Cost/Freemium"]
 repository = "https://github.com/ballerina-platform/module-ballerinax-slack"
 
 [[platform.java11.dependency]]
-path = "../java-wrapper/build/libs/java-wrapper-2.0.0.jar"
+path = "../java-wrapper/build/libs/java-wrapper-2.0.1.jar"
 groupId = "io.ballerinax.slack"
 artifactId = "java-wrapper"
-version = "2.0.0"
+version = "2.0.1"

slack/Dependencies.toml

@@ -289,7 +289,7 @@ modules = [
 [[package]]
 org = "ballerinax"
 name = "slack"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
 	{org = "ballerina", name = "http"},
 	{org = "ballerina", name = "jballerina.java"},

slack/constants.bal

@@ -84,5 +84,5 @@ const string LATEST = "&latest=";
 const string OLDEST = "&oldest=";
 const string CURSOR = "&cursor=";
 const string INCLUSIVE = "&inclusive=true";
-const string TYPES = "types=";
+const string TYPES = "&types=";
 const string UTF8 = "UTF8";

slack/utils.bal

@@ -376,12 +376,8 @@ isolated function getFileInfo(http:Client slackClient, string fileId) returns @t
     string url = GET_FILE_INFO_PATH + fileId;
     http:Response response = check slackClient->get(url);
     json fileInfo = check response.getJsonPayload();
-    var checkOk = check checkOk(fileInfo);
-    var file = fileInfo.file;
-    if (file is error) {
-        return setJsonResError(file);
-    }
-    json fileJson = <json> check file;
+    check checkOk(fileInfo);
+    json fileJson = <json> check fileInfo.file;
     convertJsonToCamelCase(fileJson);
     var fileRec = fileJson.cloneWithType(FileInfo);
     if (fileRec is error) {