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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 hookScreenshot(self, numTypes):
 """ Called by the running VR application to indicate that it wishes to be in charge of screenshots. If the application does not call this, the Compositor will only support VRScreenshotType_Stereo screenshots that will be captured without notification to the running app. Once hooked your application will receive a VREvent_RequestScreenshot event when the user presses the buttons to take a screenshot. """


        fn = self.function_table.hookScreenshot
        pSupportedTypes = EVRScreenshotType()
        result = fn(byref(pSupportedTypes), numTypes)
        return result, pSupportedTypes