def _update_offset_text_position(self, bboxes, bboxes2):
x,y = self.offsetText.get_position()<EOL>if not len(bboxes):<EOL><INDENT>bottom = self.axes.bbox.ymin<EOL><DEDENT>else:<EOL><INDENT>bbox = mtransforms.Bbox.union(bboxes)<EOL>bottom = bbox.y0<EOL><DEDENT>self.offsetText.set_position((x, bottom-self.OFFSETTEXTPAD*self.figure.dpi/<NUM_LIT>))<EOL>
Update the offset_text position based on the sequence of bounding
boxes of all the ticklabels