How do I run a Google Dataflow pipeline from a Google App Engine app?

Question

I need to run a Dataflow pipeline on a regular basis. The FAQ for Dataflow states the following:

You can automate pipeline execution through Google App En

Answer 1

I know you're using Java; however, this example, which walks through how to do this from a GAE Python Flex app, might be helpful: http://amygdala.github.io/dataflow/app_engine/2017/04/14/gae_dataflow.html