code: def set_role(self, name, value=None, default=False, disable=False):
          
          cmd = self.command_builder('username %s role' % name, value=value,
                                     default=default, disable=disable)
          return self.configure(cmd)
docs: Configures the user role vale in EOS
  
          Args:
              name (str): The name of the user to create
  
              value (str): The value to configure for the user role
  
              default (bool): Configure the user role using the EOS CLI
                  default command
  
              disable (bool): Negate the user role using the EOS CLI no command
  
          Returns:
              True if the operation was successful otherwise False