setTimestamp method
Set the timestamp field and return this
final embed = EmbedBuilder()
  .setTimestamp();
You can define an older or future timestamp
DateTime date = DateTime.now().add(DateTime(days: 5));
final embed = EmbedBuilder()
  .setTimestamp(dateTime: date);
Implementation
EmbedBuilder setTimestamp ({ DateTime? dateTime }) {
  timestamp = dateTime ?? DateTime.now();
  return this;
}