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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 add_file(self, name="", hashalg="", hash="", comClasses=None, typelibs=None, comInterfaceProxyStubs=None, windowClasses=None):
 """ Shortcut for manifest.files.append """

        self.files.append(File(name, hashalg, hash, comClasses, 
                          typelibs, comInterfaceProxyStubs, windowClasses))