title: How to combine Airflow operators?
body: <p>Almost all of my DAGs will have a subset of repeating Operators. And because of my use case, it works out really well to create new wrapper Operators that combines multiple Operators in order to reduce boilerplate.</p>
  
  <p>My question is how to go about combining them?</p>
  
  <p>An example would be to query a database followed by sending a Slack message.</p>
  
  <p><code>postgres_operator_task &gt;&gt; slack_operator_task</code> -> <code>query_then_slack_operator_task</code></p>