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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 block_transfer(self, buffer, x, y):
 """ Copy a buffer to the screen double buffer at a specified location. :param buffer: The double buffer to copy :param x: The X origin for where to place it in the Screen :param y: The Y origin for where to place it in the Screen """

        self._buffer.block_transfer(buffer, x, y)