System.Dynamic.DynamicObject.MetaDynamic.BindInvokeMember C# (CSharp) Method

            public override DynamicMetaObject BindInvokeMember(InvokeMemberBinder binder, DynamicMetaObject[] args) {
                // Generate a tree like:
                //
                // {
                //   object result;
                //   TryInvokeMember(payload, out result)
                //      ? result
                //      : TryGetMember(payload, out result)
                //          ? FallbackInvoke(result)
                //          : fallbackResult
                // }
                //
                // Then it calls FallbackInvokeMember with this tree as the
                // "error", giving the language the option of using this
                // tree or doing .NET binding.
                //
                Fallback fallback = e => binder.FallbackInvokeMember(this, args, e);

                var call = BuildCallMethodWithResult(
                    "TryInvokeMember",
                    binder,
                    DynamicMetaObject.GetExpressions(args),
                    BuildCallMethodWithResult(
                        "TryGetMember",
                        new GetBinderAdapter(binder),
                        NoArgs,
                        fallback(null), 
                        (e) => binder.FallbackInvoke(e, args, null)
                    ),
                    null
                );

                return fallback(call);
            }