https://learn.microsoft.com/en-us/dotnet/api/system.func-17?view=netframework-4.8.1
FuncT1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,TResult Delegate (System) | Microsoft...
Encapsulates a method that has 16 parameters and returns a value of the type specified by the TResult parameter.