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    <h3>Editing: OrderItemSchema.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
namespace Automattic\WooCommerce\StoreApi\Schemas\V1;

use Automattic\WooCommerce\StoreApi\Utilities\ProductItemTrait;

/**
 * OrderItemSchema class.
 */
class OrderItemSchema extends ItemSchema {
	use ProductItemTrait;

	/**
	 * The schema item name.
	 *
	 * @var string
	 */
	protected $title = 'order_item';

	/**
	 * The schema item identifier.
	 *
	 * @var string
	 */
	const IDENTIFIER = 'order-item';

	/**
	 * Get order items data.
	 *
	 * @param \WC_Order_Item_Product $order_item Order item instance.
	 * @return array
	 */
	public function get_item_response( $order_item ) {
		$order   = $order_item-&gt;get_order();
		$product = $order_item-&gt;get_product();

		return [
			'key'                  =&gt; $order-&gt;get_order_key(),
			'id'                   =&gt; $order_item-&gt;get_id(),
			'quantity'             =&gt; $order_item-&gt;get_quantity(),
			'quantity_limits'      =&gt; array(
				'minimum'     =&gt; $order_item-&gt;get_quantity(),
				'maximum'     =&gt; $order_item-&gt;get_quantity(),
				'multiple_of' =&gt; 1,
				'editable'    =&gt; false,
			),
			'name'                 =&gt; $order_item-&gt;get_name(),
			'short_description'    =&gt; $this-&gt;prepare_html_response( wc_format_content( wp_kses_post( $product-&gt;get_short_description() ) ) ),
			'description'          =&gt; $this-&gt;prepare_html_response( wc_format_content( wp_kses_post( $product-&gt;get_description() ) ) ),
			'sku'                  =&gt; $this-&gt;prepare_html_response( $product-&gt;get_sku() ),
			'low_stock_remaining'  =&gt; null,
			'backorders_allowed'   =&gt; false,
			'show_backorder_badge' =&gt; false,
			'sold_individually'    =&gt; $product-&gt;is_sold_individually(),
			'permalink'            =&gt; $product-&gt;get_permalink(),
			'images'               =&gt; $this-&gt;get_images( $product ),
			'variation'            =&gt; $this-&gt;format_variation_data( $product-&gt;get_attributes(), $product ),
			'item_data'            =&gt; $order_item-&gt;get_all_formatted_meta_data(),
			'prices'               =&gt; (object) $this-&gt;prepare_product_price_response( $product, get_option( 'woocommerce_tax_display_cart' ) ),
			'totals'               =&gt; (object) $this-&gt;prepare_currency_response( $this-&gt;get_totals( $order_item ) ),
			'catalog_visibility'   =&gt; $product-&gt;get_catalog_visibility(),
		];
	}

	/**
	 * Get totals data.
	 *
	 * @param \WC_Order_Item_Product $order_item Order item instance.
	 * @return array
	 */
	public function get_totals( $order_item ) {
		return [
			'line_subtotal'     =&gt; $this-&gt;prepare_money_response( $order_item-&gt;get_subtotal(), wc_get_price_decimals() ),
			'line_subtotal_tax' =&gt; $this-&gt;prepare_money_response( $order_item-&gt;get_subtotal_tax(), wc_get_price_decimals() ),
			'line_total'        =&gt; $this-&gt;prepare_money_response( $order_item-&gt;get_total(), wc_get_price_decimals() ),
			'line_total_tax'    =&gt; $this-&gt;prepare_money_response( $order_item-&gt;get_total_tax(), wc_get_price_decimals() ),
		];
	}
}
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