Description

XComArg allow us to set explicit XCom messages between operators. Adding a dependency between Operators is needed as it does not make sense to execute an operator that requires an XCom from another operator.

Use case / motivation

As a DAG Author, I want Airflow to automatically detect that an operator that I initialize using an XComArg is set as a downstream dependency from the XCom origin operator.

Related Issues

Blocked by: #8052