class_docstr: BaseParameterClient
  Parameter-server clients can do two things: retrieve the current parameters
  from the corresponding server, and send updates (`delta`) to the server.
class_docstr_tok: ["BaseParameterClient","Parameter-server","clients","can","do","two","things",":","retrieve","the","current","parameters","from","the","corresponding","server",",","and","send","updates","(","`","delta","`",")","to","the","server","."]
docstr: Retrieve master weights from parameter server
          
docstr_tok: ["Retrieve","master","weights","from","parameter","server"]
code: def get_parameters(self):
      """Retrieve master weights from parameter server"""
      raise NotImplementedError
  
imports: import abc
  import numpy
  import socket
  import pickle
  import urllib.request
  from ..utils.sockets import determine_master, send, receive
label_desc: Use image node_id 3 for calling the BaseParameterClient obj's underlying member method code with example usage: obj.get_parameters() without return types