docs: def clearLoggers(self, logger):
          """
          Removes the inputed logger from the set for this widget.
          
          :param      logger | <str> || <logging.Logger>
          """
          for logger in self._loggers:
              if logger == 'root':
                  logger = logging.getLogger()
              else:
                  logger = logging.getLogger(logger)
              logger.removeHandler(self.handler())
          
          self._loggers = set()