protected function setPaths()
    {
        $pathPackage = realpath(__DIR__.'/../../../../');
        $pathBase = realpath(base_path());

        // Set CLI path.
        $this->pathCli = $pathBase.'/vendor/bin/'.$this::CLI_TOOL;
        if (!file_exists($this->pathCli)) {
            $this->pathCli = $pathPackage.'/vendor/bin/'.$this::CLI_TOOL;
        }

        // Set ruleset paths.
        $this->pathRulesetStock = $pathPackage.'/rulesets/'.$this::CLI_TOOL.'.xml';
        $this->pathRulesetLocal = $pathBase.'/'.$this::CLI_TOOL.'.xml';
        $this->pathRulesetLocalLegacy = $pathBase.'/app/'.$this::CLI_TOOL.'.xml';

        // Set active ruleset.
        $this->pathRuleset = $this->pathRulesetStock;
        if (is_readable($this->pathRulesetLocal)) {
            $this->pathRuleset = $this->pathRulesetLocal;
        } elseif (is_readable($this->pathRulesetLocalLegacy)) {
            $this->pathRuleset = $this->pathRulesetLocalLegacy;
        }
    }