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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 yank(self):
 """ Yank back the most recently killed text. """

        text = self._ring.yank()
        if text:
            self._skip_cursor = True
            cursor = self._text_edit.textCursor()
            cursor.insertText(text)
            self._prev_yank = text