code: def _get_run_input(self, workflow_input, project=None, **kwargs):
          
          region = dxpy.api.project_describe(project,
                                             input_params={"fields": {"region": True}})["region"]
          dxworkflow = self.get_underlying_workflow(region)
          return dxworkflow._get_run_input(workflow_input, **kwargs)
docs: Checks the region in which the global workflow is run
          and returns the input associated with the underlying workflow
          from that region.