whenOrNull<TResult extends Object?> method Null safety

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. {TResult loading(
      )?,
    1. TResult refreshing(
      1. dynamic lastValue
      )?,
    2. TResult value(
      1. dynamic value
      )?}
    )
    @optionalTypeArgs, inherited

    Implementation

    @optionalTypeArgs
    TResult? whenOrNull<TResult extends Object?>({
      TResult Function()? loading,
      TResult Function(T lastValue)? refreshing,
      TResult Function(T value)? value,
    }) =>
        throw _privateConstructorUsedError;