framework/data/ActiveDataFilter.php
protected function buildInternal()
    {
        $filter = $this->normalize(false);
        if (empty($filter)) {
            return [];
        }

        return $this->buildCondition($filter);
    }
protected function buildInternal()
    {
        $filter = $this->normalize(false);
        if (empty($filter)) {
            return [];
        }

        return $this->buildCondition($filter);
    }
{@inheritdoc}