code: def master_call(self, **kwargs):
          '''
          Execute a function through the master network interface.
          '''
          load = kwargs
          load['cmd'] = self.client
          channel = salt.transport.client.ReqChannel.factory(self.opts,
                                                             crypt='clear',
                                                             usage='master_call')
          try:
              ret = channel.send(load)
          finally:
              channel.close()
          if isinstance(ret, collections.Mapping):
              if 'error' in ret:
                  salt.utils.error.raise_error(**ret['error'])
          return ref master_call(self, **kwargs):
          '''
          Execute a function through the master network interface.
          '''
          load = kwargs
          load['cmd'] = self.client
          channel = salt.transport.client.ReqChannel.factory(self.opts,
                                                             crypt='clear',
                                                             usage='master_call')
          try:
              ret = channel.send(load)
          finally:
              channel.close()
          if isinstance(ret, collections.Mapping):
              if 'error' in ret:
                  salt.utils.error.raise_error(**ret['error'])
          return ret
docs: Execute a function through the master network interface.