code: def __Connection_End_lineEdit_set_ui(self):
          
  
          # Adding settings key if it doesn't exists.
          self.__settings.get_key(self.__settings_section, "connection_end").isNull() and \
          self.__settings.set_key(self.__settings_section, "connection_end", self.__connection_end)
  
          connection_end = self.__settings.get_key(self.__settings_section, "connection_end").toString()
          LOGGER.debug("> Setting '{0}' with value '{1}'.".format("Connection_End_lineEdit",
                                                                  connection_end))
          self.__connection_end = connection_end
          self.Connection_End_lineEdit.setText(connection_end)
docs: Fills **Connection_End_lineEdit** Widget.