MessageExtras constructor

const MessageExtras({
  1. Map<String, Object>? headers,
  2. bool? ephemeral,
  3. String? idempotencyKey,
  4. bool? echo,
  5. Map<String, Object?> raw = const <String, Object?>{},
})

Implementation

const MessageExtras({
  this.headers,
  this.ephemeral,
  this.idempotencyKey,
  this.echo,
  this.raw = const <String, Object?>{},
});