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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 FindInstalledFiles(self):
 """ returns the list of all targets of the Install and InstallAs Builder. """

        from SCons.Tool import install
        if install._UNIQUE_INSTALLED_FILES is None:
            install._UNIQUE_INSTALLED_FILES = SCons.Util.uniquer_hashables(install._INSTALLED_FILES)
        return install._UNIQUE_INSTALLED_FILES