http://blog.nilsjonsson.com/post/632748350/never-declare-another-csharp-delegate-again

Func.cs

delegate TResult Func<T1,
                      T2,
                      T3,
                      T4,
                      T5,
                      T6,
                      T7,
                      T8,
                      T9,
                      T10,
                      T11,
                      TResult>(T1  arg1,
                               T2  arg2,
                               T3  arg3,
                               T4  arg4,
                               T5  arg5,
                               T6  arg6,
                               T7  arg7,
                               T8  arg8,
                               T9  arg9,
                               T10 arg10,
                               T11 arg11);