class_docstr: The interface which has to be implemented for any telnet application.
  An instance of this class has to be passed to `TelnetServer`.
class_docstr_tok: ["The","interface","which","has","to","be","implemented","for","any","telnet","application",".","An","instance","of","this","class","has","to","be","passed","to","`","TelnetServer","`","."]
docstr: Called when a new client was connected.
  
  Probably you want to call `telnet_connection.set_cli` here to set a
  the CommandLineInterface instance to be used.
  Hint: Use the following shortcut: `prompt_toolkit.shortcuts.create_cli`
docstr_tok: ["Called","when","a","new","client","was","connected",".","Probably","you","want","to","call","`","telnet_connection.set_cli","`","here","to","set","a","the","CommandLineInterface","instance","to","be","used",".","Hint",":","Use","the","following","shortcut",":","`","prompt_toolkit.shortcuts.create_cli","`"]
code: def client_connected(self, telnet_connection):
      """
      Called when a new client was connected.
  
      Probably you want to call `telnet_connection.set_cli` here to set a
      the CommandLineInterface instance to be used.
      Hint: Use the following shortcut: `prompt_toolkit.shortcuts.create_cli`
      """
  
imports: from __future__ import unicode_literals
  from abc import ABCMeta, abstractmethod
  from six import with_metaclass
label_desc: Use image node_id 1 for calling the TelnetApplication obj's underlying member method code with example usage: obj.client_connected(telnet_connection) without return types