code: def merge_from_master(git_action, study_id, auth_info, parent_sha):
      
      return _merge_from_master(git_action,
                                doc_id=study_id,
                                auth_info=auth_info,
                                parent_sha=parent_sha,
                                doctype_display_name="study")
docs: merge from master into the WIP for this study/author
      this is needed to allow a worker's future saves to
      be merged seamlessly into master