def get_option_names(self):
        """returns a list of fully qualified option names.

        returns:
            a list of strings representing the Options in the source Namespace
            list.  Each item will be fully qualified with dot delimited
            Namespace names.
        """
        return [x for x in self.option_definitions.keys_breadth_first()
                if isinstance(self.option_definitions[x], Option)]
returns a list of fully qualified option names.

        returns:
            a list of strings representing the Options in the source Namespace
            list.  Each item will be fully qualified with dot delimited
            Namespace names.