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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 LoadPlugins(cls):
 """Load all registered iotile.update_record plugins."""


        if cls.PLUGINS_LOADED:
            return

        reg = ComponentRegistry()
        for _, record in reg.load_extensions('iotile.update_record'):
            cls.RegisterRecordType(record)

        cls.PLUGINS_LOADED = True