Parse the configuration for the names of the COs for which to
        construct virtual IdPs.

        :rtype: [str]

        :return: list of CO names

def _co_names_from_config(self):
        """
        Parse the configuration for the names of the COs for which to
        construct virtual IdPs.

        :rtype: [str]

        :return: list of CO names
        """
        co_names = [co[self.KEY_ENCODEABLE_NAME] for
                    co in self.config[self.KEY_CO]]

        return co_names