public function delete($_, $assoc_args)
    {
        $this->init_args(func_get_args());
        $env = $this->get_env_for_write_or_fail();

        foreach ($_ as $key) {
            if ($result = $env->remove($key)) {
                WP_CLI::success("Removed '$key'");
            } else {
                WP_CLI::warning("No line found for key: '$key'");
            }
        }

        $env->save();
    }