DBZ-8135 added support for signal to Debezium Engine. However the initial implementation proved to be difficult to use as it transfers the responsibility of using the right Signaler implementation for given engine on the user.

After discussion with jpechane the following redesign was proposed

• simplify Signaler interface to take a new Signal record as parameter of Signaler#signal
• introduce DebeziumEngine Signal record to the api
  -add getSignaler() to DebeziumEngine API