code: public ServiceFuture<List<ProjectInner>> listAsync(final String groupName, final String serviceName, final ListOperationCallback<ProjectInner> serviceCallback) {
          return AzureServiceFuture.fromPageResponse(
              listSinglePageAsync(groupName, serviceName),
              new Func1<String, Observable<ServiceResponse<Page<ProjectInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<ProjectInner>>> call(String nextPageLink) {
                      return listNextSinglePageAsync(nextPageLink);
                  }
              },
              serviceCallback);
      }
docs: Get projects in a service.
  The project resource is a nested resource representing a stored migration project. This method returns a list of projects owned by a service resource.
  
  @param groupName Name of the resource group
  @param serviceName Name of the service
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object