How to use

toJson

method

in

org.eclipse.ditto.signals.base.Signal

  private static ShardedMessageEnvelope createEnvelope(final EntityId entityId, final Signal<?> signal) {
    return ShardedMessageEnvelope.of(
        entityId.toString(),
        signal.getType(),
        signal.toJson(signal.getImplementedSchemaVersion(), FieldType.regularOrSpecial()),
        signal.getDittoHeaders());
  }
}