System.Reflection.Emit.MethodBuilder.SetImplementationFlags C# (CSharp) Method

        public void SetImplementationFlags(System.Reflection.MethodImplAttributes attributes) { }
        public void SetParameters(params System.Type[] parameterTypes) { }

		static TypeBuilder DefineDelegate () {
		   TypeBuilder typeBuilder = module.DefineType( "MyDelegate", 
				TypeAttributes.Public | TypeAttributes.Class | TypeAttributes.Sealed, 
				typeof (object) );
			args = typeBuilder.DefineGenericParameters ("TIn", "TOut");

			delegate_ctor = typeBuilder.DefineConstructor( 
				MethodAttributes.Public | MethodAttributes.HideBySig | 
				MethodAttributes.RTSpecialName | MethodAttributes.SpecialName, 
				CallingConventions.Standard, 
				new Type[] { typeof(Object), typeof (IntPtr) } ); 

			delegate_ctor.SetImplementationFlags( MethodImplAttributes.Runtime | MethodImplAttributes.Managed ); 

			invoke_mb = typeBuilder.DefineMethod( 
				"Invoke", 
				MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig, 
				args [1], 
				new Type[] { args [0] } ); 

			invoke_mb.SetImplementationFlags( MethodImplAttributes.Runtime | MethodImplAttributes.Managed ); 

			MethodBuilder mb = typeBuilder.DefineMethod( 
				"BeginInvoke", 
				MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig, 
				typeof (IAsyncResult), 
				new Type[] { args [0], typeof (AsyncCallback), typeof (object) } ); 

			mb.SetImplementationFlags( MethodImplAttributes.Runtime | MethodImplAttributes.Managed ); 

			mb = typeBuilder.DefineMethod( 
				"EndInvoke", 
				MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig, 
				args [1], 
				new Type[] {  typeof (IAsyncResult) } ); 

			mb.SetImplementationFlags( MethodImplAttributes.Runtime | MethodImplAttributes.Managed ); 

			return typeBuilder;
		}