getUnit()); } public function getMarginTop() { return Helper::convertUnit(self::MARGIN_SIDES, 'in', $this->getUnit()); } public function getMarginBottom() { return Helper::convertUnit(self::MARGIN_SIDES, 'in', $this->getUnit());} public function getMarginLeft() { return Helper::convertUnit(self::MARGIN_ENDS, 'in', $this->getUnit()); } public function getMarginRight() { return Helper::convertUnit(self::MARGIN_ENDS, 'in', $this->getUnit()); } }