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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 _move_to_top(self, pos):
 """Move element at given position to top of queue."""

        if pos > 0:
            self.queue.rotate(-pos)
            item = self.queue.popleft()
            self.queue.rotate(pos)
            self.queue.appendleft(item)