<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _handle_config(self, config_file):
 """ Check and handle a config file. :param config_file: The path to the config file :type config_file: str :rtype: bool """

        config = self._get_config(config_file)

        self.resolver = DatabaseManager(
            config.get("databases", config.get("DATABASES", {}))
        )

        return True