lib/Model/Charge.php
public function getStateAllowableValues()
    {
        return array(
            self::STATE_AUTHORISED,
            self::STATE_CAPTURED,
            self::STATE_CANCELLED,
            self::STATE_DECLINED,
            self::STATE_REFUNDED,
        );
    }
public function getStateAllowableValues()
    {
        return array(
            self::STATE_AUTHORISED,
            self::STATE_CAPTURED,
            self::STATE_CANCELLED,
            self::STATE_DECLINED,
            self::STATE_REFUNDED,
        );
    }
Gets allowable values of the enum
@return string[]