def METHOD_NAME(self, event=None, **kwargs):
    """Update our choice of keys if the pipeline has changed.
    """
    colKeys = _getPossibleKeys(self.pipeline)
    self.chPointColour.Clear()
    self.chPointColour.SetItems(colKeys)
    currentCol = self.pointDisplaySettings.colourDataKey
    if currentCol in colKeys:
        self.chPointColour.SetSelection(colKeys.index(currentCol))