public function addSchema(string $schema) : void
    {
        $work = $schema;
        if ($work{0} != '/') {
            $work = getcwd()."/$work";
        }
        if (!file_exists($work)) {
            $this->notice("`\"$schema\"` for `{$this->database}` not found, skipping.");
            return;
        }
        $this->schemas[] = file_get_contents($work);
        $this->success("Loaded $schema.");
    }