def __init__(self, config=None, all_linters=None):
self._classes = all_linters or LINTERS<EOL>self._config = config or Config(self._classes)<EOL>LinterRunner.config = self._config<EOL>
Initialize the only Config object and assign it to other classes.

        Args:
            config (Config): Config object.
            all_linters (dict): Names and classes of all available linters.