class_docstr: Server base class for pathos servers for parallel and distributed computing.
      
docstr: begin serving, and set the timeout
docstr_tok: ["begin","serving",",","and","set","the","timeout"]
code: def serve(self, timeout):
      """begin serving, and set the timeout"""
      self._selector.watch(timeout)
      return
  
label_desc: Use image node_id 4 for calling the Server obj's underlying member method code with example usage: obj.serve(timeout) without return types