code: def run_command(self, command):
          
          if not isinstance(command, basestring):
              raise ValueError("command must be a string")
          return self._ssh_client.run_gerrit_command(command)
docs: Run a command.
  
          :arg str command: The command to run.
  
          :Return: The result as a string.
  
          :Raises: `ValueError` if `command` is not a string.