code: public ServiceFuture<LabInner> updateAsync(String resourceGroupName, String labAccountName, String labName, LabFragment lab, final ServiceCallback<LabInner> serviceCallback) {
          return ServiceFuture.fromResponse(updateWithServiceResponseAsync(resourceGroupName, labAccountName, labName, lab), serviceCallback);
      }
docs: Modify properties of labs.
  
  @param resourceGroupName The name of the resource group.
  @param labAccountName The name of the lab Account.
  @param labName The name of the lab.
  @param lab Represents a lab.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object