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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def restore_text_cursor_anchor(self):
 """ Restores the document cursor anchor. :return: Method success. :rtype: bool """


        if not self.__text_cursor_anchor:
            return False

        text_cursor, horizontal_scroll_bar_slider_position, vertical_scroll_bar_slider_position = self.__text_cursor_anchor
        self.setTextCursor(text_cursor)
        self.horizontalScrollBar().setSliderPosition(horizontal_scroll_bar_slider_position)
        self.verticalScrollBar().setSliderPosition(vertical_scroll_bar_slider_position)
        return True