System.Func<T1, T2, T3, T4, T5, T6, T7, T8, TResult>

public sealed delegate Func<T1, T2, T3, T4, T5, T6, T7, T8, TResult> : MulticastDelegate

Documentation
Code

namespace System { public delegate TResult Func<in T1, in T2, in T3, in T4, in T5, in T6, in T7, in T8, out TResult> (T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7, T8 arg8); }