Metaflow job completion or exit handlers?

[jaskaran-virdi-imprivata]

Use case: After a metaflow job ends, would like the flow of control to go back to the microservice that triggered the metaflow job

For a general case, lets say, after a metaflow job completes(success or failure), I would like to return the flow of control to a microservice that had triggered the metaflow job. The metaflow documentation talks about triggering workflows by external events but didn't see anything about completion handlers. How does one implement that?