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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 setOverlayAlpha(self, ulOverlayHandle, fAlpha):
 """Sets the alpha of the overlay quad. Use 1.0 for 100 percent opacity to 0.0 for 0 percent opacity."""


        fn = self.function_table.setOverlayAlpha
        result = fn(ulOverlayHandle, fAlpha)
        return result