code: def register_introspection_functions(self):
          
  
          self.funcs.update({'system.listMethods' : self.system_listMethods,
                        'system.methodSignature' : self.system_methodSignature,
                        'system.methodHelp' : self.system_methodHelp})
docs: Registers the XML-RPC introspection methods in the system
          namespace.
  
          see http://xmlrpc.usefulinc.com/doc/reserved.html