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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 NetFxSdkDir(self):
 """ Microsoft .NET Framework SDK directory. """

        for ver in self.NetFxSdkVersion:
            loc = os.path.join(self.ri.netfx_sdk, ver)
            sdkdir = self.ri.lookup(loc, 'kitsinstallationfolder')
            if sdkdir:
                break
        return sdkdir or ''