Usar fontes de dados externas para quantidades esperadas em contagens de ciclo

public class UpdateInventory implements healthcloudext.IFetchInventoryCount{
//Sample Apex Class to fetch Inventory count from external Inventory Location (Input parameter : visitId)
    public Map<Id,Integer> getInventoryCount(String visitId){
		 Map<Id,Integer> sample = new Map<Id,Integer>();        
    	    //Logic to fetch numbers from external data source
 	        //Use Apex code to connect to external API and fetch result  
        	//Return Type: Map of Product Item Id against its Count(Integer Value)
        return sample;
    }
}