public ItemsResponse getItemsByExternalId(int appId, String externalId) {
		return getItems(appId, null, null, null, null,
				new FilterByValue<String>(new ExternalIdFilterBy(), externalId));
	}
public ItemsResponse getItemsByExternalId ( int appId , String externalId ) { return getItems ( appId , null , null , null , null , new FilterByValue < String > ( new ExternalIdFilterBy ( ) , externalId ) ) ; }
Utility method to get items matching an external id

@param appId
The id of the app
@param externalId
The external id
@return The items matching the app and external id