docs: def valid_return_codes(self, *codes):
          """ Sets codes which are considered valid when returned from
          command modules. The default is (0, ).
  
          Should be used as a context::
  
              with api.valid_return_codes(0, 1):
                  api.shell('test -e /tmp/log && rm /tmp/log')
  
          """
          previous_codes = self._valid_return_codes
          self._valid_return_codes = codes
  
          yield
  
          self._valid_return_codes = previous_codes