whenOrNull<TResult extends Object?> method Null safety

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. {TResult? noProxy(
      )?,
    1. TResult? system(
        )?,
      1. TResult? httpProxy(
        1. String host,
        2. int port
        )?}
      )
      inherited

      Implementation

      @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>({
  TResult? Function()? noProxy,
  TResult? Function()? system,
  TResult? Function(String host, int port)? httpProxy,
}) =>
    throw _privateConstructorUsedError;