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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 get_selected_text_metrics(self):
 """ Returns current document selected text metrics. :return: Selected text metrics. :rtype: tuple """


        selected_text = self.get_selected_text()
        if not selected_text:
            return tuple()

        return (selected_text, self.get_cursor_line(), self.get_cursor_column() - len(selected_text))