code: def saveXml(self, xml):
          
          lvls = []
          for logger, level in self.loggerLevels().items():
              lvls.append('{0}:{1}'.format(logger, level))
          
          xlevels = ElementTree.SubElement(xml, 'levels')
          xlevels.text = ','.join(map(str, self.activeLevels()))
          
          xloggerlevels = ElementTree.SubElement(xml, 'logger_levels')
          xloggerlevels.text = ','.join(lvls)
          
          xml.set('filter', wrapVariant(self.uiFilterTXT.text()))
          
          xtree = ElementTree.SubElement(xml, 'tree')
          self.uiRecordTREE.saveXml(xtree)
docs: Saves the logging settings for this widget to XML format.
          
          :param      xml | <xml.etree.ElementTree.Element>