def get_priority_string(self, priority):
        """
        Return a string, `priority` combined with `self.serialno`.

        This ensures FIFO order on transforms with identical priority.
        """
        self.serialno += 1
        return '%03d-%03d' % (priority, self.serialno)
dataset/ETHPy150Open adieu/allbuttonspressed/docutils/transforms/__init__.py/Transformer.get_priority_string/original