Add placeholder extension function so that async compiler warnings can be bypassed.

Author: brthor

Gofer.NET.Utils/MethodCallArgumentResolutionVisitor.cs

@@ -7,6 +7,12 @@ public class MethodCallArgumentResolutionVisitor : ExpressionVisitor
     {
         protected override Expression VisitMethodCall(MethodCallExpression node)
         {
+            if (node.Method.Name == nameof(TaskExtensions.T)
+                && node.Method.DeclaringType == typeof(TaskExtensions))
+            {
+                node = (MethodCallExpression) node.Arguments[0];
+            }
+
             var argumentExpressions = new List<Expression>();
             foreach (var argument in node.Arguments)
             {
@@ -16,12 +22,6 @@ protected override Expression VisitMethodCall(MethodCallExpression node)
                 var valueExpression = Expression.Constant(argumentValue, argument.Type);
                 argumentExpressions.Add(valueExpression);
             }
-
-            if (node.Method.Name == nameof(TaskExtensions.T)
-                && node.Method.DeclaringType == typeof(TaskExtensions))
-            {
-                node = (MethodCallExpression) node.Object;
-            }
 
             return Expression.Call(node.Object, node.Method, argumentExpressions);
         }