diff --git a/.vscode/launch.json b/.vscode/launch.json
index 31280b5fe5..d7b69c20f5 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -5,7 +5,7 @@
    "version": "0.2.0",
    "configurations": [
         {
-            "name": ".NET Core Launch (console)",
+            "name": "Launch TypeScript",
             "type": "coreclr",
             "request": "launch",
             "preLaunchTask": "build",
@@ -24,6 +24,46 @@
             "console": "internalConsole",
             "stopAtEntry": false
         },
+        {
+            "name": "Launch Java",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/src/kiota/bin/Debug/net5.0/kiota.dll",
+            "args": ["--openapi",
+                 "C:/sources/github/msgraph-sdk-powershell/openApiDocs/v1.0/mail.yml",
+                 "--language",
+                 "java",
+                 "-o",
+                 "C:/Users/vibiret/Desktop/graphjavav4/utilities/src/main/java/graphjavav4/utilities",
+                 "-n",
+                 "graphjavav4.utilities" ],
+            "cwd": "${workspaceFolder}/src/kiota",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": "Launch CSharp",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/src/kiota/bin/Debug/net5.0/kiota.dll",
+            "args": ["--openapi",
+                 "C:/sources/github/msgraph-sdk-powershell/openApiDocs/v1.0/mail.yml",
+                 "--language",
+                 "csharp",
+                 "-o",
+                 "C:/Users/vibiret/Desktop/graphjavav4/utilities/src/main/java/graphjavav4/utilities",
+                 "-n",
+                 "graphcsharpv4.utilities" ],
+            "cwd": "${workspaceFolder}/src/kiota",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
         {
             "name": ".NET Core Attach",
             "type": "coreclr",
diff --git a/src/kiota.core/Extensions/StringExtensions.cs b/src/kiota.core/Extensions/StringExtensions.cs
new file mode 100644
index 0000000000..123defae3d
--- /dev/null
+++ b/src/kiota.core/Extensions/StringExtensions.cs
@@ -0,0 +1,9 @@
+using System.Linq;
+
+namespace kiota.core {
+    public static class StringExtensions {
+        public static string ToLowerFirstCharacter(this string current) {
+            return $"{char.ToLowerInvariant(current.FirstOrDefault())}{current.Substring(1)}";
+        }
+    }
+}
diff --git a/src/kiota.core/KiotaBuilder.cs b/src/kiota.core/KiotaBuilder.cs
index b7e252ddcc..a0ec7ef9bf 100644
--- a/src/kiota.core/KiotaBuilder.cs
+++ b/src/kiota.core/KiotaBuilder.cs
@@ -271,7 +271,7 @@ private CodeMethod CreateOperationMethod(OperationType operationType, OpenApiOpe
             }
 
             var method = new CodeMethod() {
-                Name = operationType.ToString() + "Async",
+                Name = operationType.ToString(),
                 ReturnType = new CodeType() { Name = "object"}
             };
             var methodParameter = new CodeParameter
diff --git a/src/kiota.core/Refiners/CSharpRefiner.cs b/src/kiota.core/Refiners/CSharpRefiner.cs
index 2127983fc7..9668d8f587 100644
--- a/src/kiota.core/Refiners/CSharpRefiner.cs
+++ b/src/kiota.core/Refiners/CSharpRefiner.cs
@@ -7,7 +7,14 @@ public override void Refine(CodeNamespace generatedCode)
         {
             generatedCode.AddUsing(new CodeUsing() { Name = "System" });
             generatedCode.AddUsing(new CodeUsing() { Name = "System.Threading.Tasks" });
+            AddAsyncSuffix(generatedCode);
             AddInnerClasses(generatedCode);
         }
+        private void AddAsyncSuffix(CodeElement currentElement) {
+            if(currentElement is CodeMethod currentMethod)
+                currentMethod.Name += "Async";
+            foreach(var childElement in currentElement.GetChildElements())
+                AddAsyncSuffix(childElement);
+        }
     }
 }
diff --git a/src/kiota.core/Writers/JavaWriter.cs b/src/kiota.core/Writers/JavaWriter.cs
index 0db34cb751..2c8eda924d 100644
--- a/src/kiota.core/Writers/JavaWriter.cs
+++ b/src/kiota.core/Writers/JavaWriter.cs
@@ -72,7 +72,7 @@ public override void WriteMethod(CodeMethod code)
         {
             //TODO javadoc
             WriteLine("@javax.annotation.Nonnull");
-            WriteLine($"public java.util.concurrent.Future<{GetTypeString(code.ReturnType)}> {code.Name}({string.Join(',', code.Parameters.Select(p=> GetParameterSignature(p)).ToList())}) {{ return null; }}");
+            WriteLine($"public java.util.concurrent.Future<{GetTypeString(code.ReturnType)}> {code.Name.ToLowerFirstCharacter()}({string.Join(',', code.Parameters.Select(p=> GetParameterSignature(p)).ToList())}) {{ return null; }}");
         }
 
         public override void WriteNamespaceDeclaration(CodeNamespace.BlockDeclaration code)
diff --git a/src/kiota.core/Writers/TypeScriptWriter.cs b/src/kiota.core/Writers/TypeScriptWriter.cs
index f00c5fe1ed..d217078c2d 100644
--- a/src/kiota.core/Writers/TypeScriptWriter.cs
+++ b/src/kiota.core/Writers/TypeScriptWriter.cs
@@ -87,7 +87,7 @@ public override void WriteIndexer(CodeIndexer code)
 
         public override void WriteMethod(CodeMethod code)
         {
-            WriteLine($"public readonly {code.Name} = ({string.Join(',', code.Parameters.Select(p=> GetParameterSignature(p)).ToList())}) : Promise<{GetTypeString(code.ReturnType)}> => {{ return Promise.resolve({(code.ReturnType.Name.Equals("string") ? "''" : "{}")}); }}");
+            WriteLine($"public readonly {code.Name.ToLowerFirstCharacter()} = ({string.Join(',', code.Parameters.Select(p=> GetParameterSignature(p)).ToList())}) : Promise<{GetTypeString(code.ReturnType)}> => {{ return Promise.resolve({(code.ReturnType.Name.Equals("string") ? "''" : "{}")}); }}");
         }
 
         public override void WriteNamespaceDeclaration(CodeNamespace.BlockDeclaration code) => WriteLine();