src/main/php/com-realexpayments-hpp-sdk/domain/HppRequest.php
public function addCardStorageEnable( $cardStorageEnable ) {
		if ( is_bool( $cardStorageEnable ) ) {
			$this->cardStorageEnable = $cardStorageEnable ? Flag::TRUE : Flag::FALSE;
		} else {
			$this->cardStorageEnable = $cardStorageEnable;
		}

		return $this;
	}
public function addCardStorageEnable( $cardStorageEnable ) {
		if ( is_bool( $cardStorageEnable ) ) {
			$this->cardStorageEnable = $cardStorageEnable ? Flag::TRUE : Flag::FALSE;
		} else {
			$this->cardStorageEnable = $cardStorageEnable;
		}

		return $this;
	}
Helper method for adding a cardStorageEnable

@param mixed|bool $cardStorageEnable

@return HppRequest