Fills **Connection_End_lineEdit** Widget.

def __Connection_End_lineEdit_set_ui(self):
        """
        Fills **Connection_End_lineEdit** Widget.
        """

        # 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)