Fix primitive type case

Also added bool as a switch case. This updates methods with return types
of "String" to now return "string".

Author: Caitlin Bales (MSFT)

Templates/CSharp/Requests/IMethodRequest.cs.tt

@@ -13,7 +13,7 @@ var isComposable = method.IsComposable;
 var methodName = method.Name.Substring(method.Name.IndexOf('.') + 1).ToCheckedCase();
 var requestType = entityName + methodName + "Request";
 
-var returnEntityType = method.ReturnType == null ? null : method.ReturnType.Name.GetTypeString().ToCheckedCase();
+var returnEntityType = method.ReturnType == null ? null : method.ReturnType.Name.ToCheckedCase().GetTypeString();
 var returnEntityParameter = string.Empty;
 if (returnEntityType != null) {returnEntityParameter = returnEntityType.ToLower();}
 var returnTypeObject = method.ReturnType == null ? null : method.ReturnType.AsOdcmClass();

Templates/CSharp/Requests/MethodRequest.cs.tt

@@ -13,7 +13,7 @@ var isComposable = method.IsComposable;
 var methodName = method.Name.Substring(method.Name.IndexOf('.') + 1).ToCheckedCase();
 var requestType = entityName + methodName + "Request";
 
-var returnEntityType = method.ReturnType == null ? null : method.ReturnType.Name.GetTypeString().ToCheckedCase();
+var returnEntityType = method.ReturnType == null ? null : method.ReturnType.Name.ToCheckedCase().GetTypeString();
 var returnEntityParameter = string.Empty;
 if (returnEntityType != null) {returnEntityParameter = returnEntityType.ToLower();}
 

src/GraphODataTemplateWriter/CodeHelpers/CSharp/TypeHelperCSharp.cs

@@ -138,6 +138,7 @@ public static string GetTypeString(this string type)
                 case "binary":
                     return "byte[]";
                 case "boolean":
+                case "bool":
                     return "bool";
                 case "date":
                     return "Date";