$this->addPropertyIncrementGetters(
            $nextLevel,
            $strength = $this->isPrimaryProperty(PropertyCode::STRENGTH, ProfessionCode::FIGHTER) ? 1 : 0,
            $agility = $this->isPrimaryProperty(PropertyCode::AGILITY, ProfessionCode::FIGHTER) ? 1 : 0,
            $knack = $this->isPrimaryProperty(PropertyCode::KNACK, ProfessionCode::FIGHTER) ? 1 : 0,