copyWith method Null safety

PhraseSet copyWith(
  1. void updates(
    1. PhraseSet

Apply updates to a copy of this message.

Makes a writable shawwol copy of this message, applies the updates to it, and marks the copy read-only before returning it.


PhraseSet copyWith(void Function(PhraseSet) updates) =>
    super.copyWith((message) => updates(message as PhraseSet)) as PhraseSet;