docs: def handle_errors(callback, parsed=None, out=sys.stderr):
  
      """Execute the callback, optionally passing it parsed, and return
      its return value.  If an exception occurs, determine which kind it
      is, output an appropriate message, and return the corresponding
      error code."""
  
      try:
          if parsed:
              return callback(parsed)
          else:
              return callback()
      except DeploymentError as e:
          traceback.print_exc(file=out)
          print(e, file=out)
          if hasattr(e, 'value') and hasattr(e.value, 'args') and len(e.value.args) > 0 and \
                  'open_sftp_client' in e.value.args[0]:
              print('Timeout', file=out)
              return TIMEOUT
          return DEPLOYMENT_ERROR
      except MalformedResponseError as e:
          traceback.print_exc(file=out)
          print(e, file=out)
          if 'Service Unavailable' in e.body:
              return SERVICE_UNAVAILABLE
          return MALFORMED_RESPONSE
      except SystemExit:
          pass
      except:
          traceback.print_exc(file=out)
          return EXCEPTION