src/models/Price.php
public function isQuantityPredefined(): bool
    {
        if (!$this->isOveruse()
            && ($this->isShared() || $this->getSubtype() === 'rack_unit')
        ) {
            return false;
        }

        return true;
    }
public function isQuantityPredefined(): bool
    {
        if (!$this->isOveruse()
            && ($this->isShared() || $this->getSubtype() === 'rack_unit')
        ) {
            return false;
        }

        return true;
    }
public function isQuantityPredefined ( ) : bool { if ( ! $ this -> isOveruse ( ) && ( $ this -> isShared ( ) || $ this -> getSubtype ( ) === 'rack_unit' ) ) { return false ; } return true ; }
Method checks, whether current price quantity is predefined and is not a result
of sophisticated calculation on server side.
@return bool
Method checks whether current price quantity is predefined and is not a result of sophisticated calculation on server side .