code: def _updateTargetFromNode(self):
          
          rtiInfo = self.collector.rtiInfo
          self.plotItem.setLabel(self.axisPosition, self.configValue.format(**rtiInfo))
          self.plotItem.showLabel(self.axisPosition, self.configValue != self.NO_LABEL)
docs: Applies the configuration to the target axis it monitors.
              The axis label will be set to the configValue. If the configValue equals
               PgAxisLabelCti.NO_LABEL, the label will be hidden.