System.Dynamic.InvokeMemberBinder.FallbackInvokeMember C# (CSharp) Method

        public DynamicMetaObject FallbackInvokeMember(DynamicMetaObject target, DynamicMetaObject[] args)
        {
            return FallbackInvokeMember(target, args, null);
        }

            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.
                //
                DynamicMetaObject call = BuildCallMethodWithResult(
                    nameof(DynamicObject.TryInvokeMember),
                    binder,
                    GetExpressions(args),
                    BuildCallMethodWithResult <GetMemberBinder>(
                        nameof(DynamicObject.TryGetMember),
                        new GetBinderAdapter(binder),
                        s_noArgs,
                        binder.FallbackInvokeMember(this, args, null),
                        (MetaDynamic @this, GetMemberBinder ignored, DynamicMetaObject e) => binder.FallbackInvoke(e, args, null)
                        ),
                    null
                    );

                return(binder.FallbackInvokeMember(this, args, call));
            }