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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 adapter(self, adapter):
 """Sets the adapter instance under the "_adapter" property in use by this class. Also sets the adapter property for all implemented classes under this category. :param adapter: New adapter instance to set for this class and all implemented classes under this category. :type adapter: hvac.adapters.Adapter """

        self._adapter = adapter
        for implemented_class in self.implemented_classes:
            class_name = implemented_class.__name__.lower()
            getattr(self, self.get_private_attr_name(class_name)).adapter = adapter