Currently it returns this:
Follow this example:
rs_uid = yield from open_run(md)
def except_plan(e):
if isinstance(e, RunEngineControlException):
yield from close_run(exit_status=e.exit_status)
else:
yield from close_run(exit_status='fail', reason=str(e))
yield from contingency_wrapper(plan,
except_plan=except_plan,
else_plan=close_run)
return rs_uid