custom abstract method

TRes custom(
  1. Iterable<Input$UserCustomInput>? _fn(
    1. Iterable<CopyWith$Input$UserCustomInput<Input$UserCustomInput>>?
    )
)

Implementation

TRes custom(
    Iterable<Input$UserCustomInput>? Function(
            Iterable<CopyWith$Input$UserCustomInput<Input$UserCustomInput>>?)
        _fn);