Func
- alias Func(R) = R delegate()
 - alias Func(T, R) = R delegate(T)
alias Func(T, R) = 
R delegate  - alias Func(T1, T2, R) = R delegate(T1, T2)
 - alias Func(T1, T2, T3, R) = R delegate(T1, T2, T3)
 - alias Func(T1, T2, T3, T4, R) = R delegate(T1, T2, T3, T4)
 - alias Func(T1, T2, T3, T4, T5, R) = R delegate(T1, T2, T3, T4, T5)
 - alias Func(T1, T2, T3, T4, T5, T6, R) = R delegate(T1, T2, T3, T4, T5, T6)
 
 
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