src/ClearSaleID/Entity/Request/Item.php
public function setCategoryId( $categoryId )
    {
        if (!is_int( $categoryId )) {
            throw new InvalidArgumentException( sprintf( 'Invalid categoryId', $categoryId ) );
        }

        $this->categoryId = $categoryId;

        return $this;
    }
public function setCategoryId( $categoryId )
    {
        if (!is_int( $categoryId )) {
            throw new InvalidArgumentException( sprintf( 'Invalid categoryId', $categoryId ) );
        }

        $this->categoryId = $categoryId;

        return $this;
    }
@param  string $categoryId

@return $this