'Update the offset_text position based on the sequence of bounding
boxes of all the ticklabels'

def _update_offset_text_position(self, bboxes, bboxes2):

    (x, y) = self.offsetText.get_position()
    top = self.axes.bbox.ymax
    self.offsetText.set_position((x, (top + ((self.OFFSETTEXTPAD * self.figure.dpi) / 72.0))))
