public function removeCatValue($assessmentSectionId, $key)
    {
        if (isset($this->state[self::VAR_CAT]) && isset($this->state[self::VAR_CAT][$assessmentSectionId]) && isset($this->state[self::VAR_CAT][$assessmentSectionId][$key])) {
            unset($this->state[self::VAR_CAT][$assessmentSectionId][$key]);
        }
        return $this;
    }