est is made; determines fields present in response.', 'woocommerce' ),
			'type'              => 'string',
			'sanitize_callback' => 'sanitize_key',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$schema = $this->get_item_schema();

		if ( empty( $schema['properties'] ) ) {
			return array_merge( $param_details, $args );
		}

		$contexts = array();

		foreach ( $schema['properties'] as $attributes ) {
			if ( ! empty( $attributes['context'] ) ) {
				$contexts = array_merge( $contexts, $attributes['context'] );
			}
		}

		if ( ! empty( $contexts ) ) {
			$param_details['enum'] = array_unique( $contexts );
			rsort( $param_details['enum'] );
		}

		return array_merge( $param_details, $args );
	}

	/**
	 * Prepares a response for insertion into a collection.
	 *
	 * @param \WP_REST_Response $response Response object.
	 * @return array|mixed Response data, ready for insertion into collection data.
	 */
	protected function prepare_response_for_collection( \WP_REST_Response $response ) {
		$data   = (array) $response->get_data();
		$server = rest_get_server();
		$links  = $server::get_compact_response_links( $response );

		if ( ! empty( $links ) ) {
			$data['_links'] = $links;
		}

		return $data;
	}

	/**
	 * Prepare links for the request.
	 *
	 * @param mixed            $item Item to prepare.
	 * @param \WP_REST_Request $request Request object.
	 * @return array
	 */
	protected function prepare_links( $item, $request ) {
		return [];
	}

	/**
	 * Retrieves the query params for the collections.
	 *
	 * @return array Query parameters for the collection.
	 */
	public function get_collection_params() {
		return array(
			'context' => $this->get_context_param(),
		);
	}
}
<br />
<b>Warning</b>:  Class "Automattic\WooCommerce\StoreApi\Routes\V1\AbstractCartRoute" not found in <b>/var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce/src/StoreApi/deprecated.php</b> on line <b>73</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;Automattic\WooCommerce\StoreApi\Routes\V1\AbstractRoute&quot; not found in /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce/src/StoreApi/Routes/V1/AbstractCartRoute.php:21
Stack trace:
#0 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce-payments/vendor/jetpack-autoloader/class-php-autoloader.php(102): require()
#1 [internal function]: Automattic\Jetpack\Autoloader\jp82ae2b86cd431fd736751ad4c4460abb\al5_0_2\PHP_Autoloader::load_class()
#2 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce/src/StoreApi/deprecated.php(73): class_alias()
#3 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce-payments/vendor/jetpack-autoloader/class-version-loader.php(109): require_once('...')
#4 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce-payments/vendor/jetpack-autoloader/class-autoloader-handler.php(124): Automattic\Jetpack\Autoloader\jp82ae2b86cd431fd736751ad4c4460abb\al5_0_2\Version_Loader-&gt;load_filemap()
#5 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce-payments/vendor/jetpack-autoloader/class-autoloader.php(80): Automattic\Jetpack\Autoloader\jp82ae2b86cd431fd736751ad4c4460abb\al5_0_2\Autoloader_Handler-&gt;activate_autoloader()
#6 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce-payments/vendor/autoload_packages.php(13): Automattic\Jetpack\Autoloader\jp82ae2b86cd431fd736751ad4c4460abb\al5_0_2\Autoloader::init()
#7 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce-payments/woocommerce-payments.php(27): require_once('...')
#8 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-settings.php(560): include_once('...')
#9 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-config.php(100): require_once('...')
#10 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-load.php(50): require_once('...')
#11 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-blog-header.php(13): require_once('...')
#12 /var/www/vhosts/bininntaranaki.co.nz/httpdocs/index.php(17): require('...')
#13 {main}
  thrown in <b>/var/www/vhosts/bininntaranaki.co.nz/httpdocs/wp-content/plugins/woocommerce/src/StoreApi/Routes/V1/AbstractCartRoute.php</b> on line <b>21</b><br />