HigherFn4<R, T0, T1, T2, T3> typedef
HigherFn4<R, T0, T1, T2, T3> =
R Function(T3) Function(T2) Function(T1) Function(T0)
Implementation
typedef HigherFn4<R, T0, T1, T2, T3> = R Function(T3) Function(T2) Function(T1)
Function(T0);