Request the job status. To request the status of a job, we recommend using
`projects.locations.jobs.messages.list` with a [regional endpoint]
(https://cloud.google.com/dataflow/docs/concepts/regional-endpoints). Using
`projects.jobs.messages.list` is not recommended, as you can only request the status of jobs that
are running in `us-central1`.
Create a request for the method "messages.list".
This request holds the parameters needed by the dataflow server. After setting any optional
parameters, call the
AbstractGoogleClientRequest.execute()
method to invoke the remote operation.