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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 getOverlayMouseScale(self, ulOverlayHandle):
 """ Gets the mouse scaling factor that is used for mouse events. The actual texture may be a different size, but this is typically the size of the underlying UI in pixels. """


        fn = self.function_table.getOverlayMouseScale
        pvecMouseScale = HmdVector2_t()
        result = fn(ulOverlayHandle, byref(pvecMouseScale))
        return result, pvecMouseScale