code: public Observable<GetRegionalAvailabilityResponseInner> getRegionalAvailabilityAsync(String resourceGroupName, String labAccountName) {
          return getRegionalAvailabilityWithServiceResponseAsync(resourceGroupName, labAccountName).map(new Func1<ServiceResponse<GetRegionalAvailabilityResponseInner>, GetRegionalAvailabilityResponseInner>() {
              @Override
              public GetRegionalAvailabilityResponseInner call(ServiceResponse<GetRegionalAvailabilityResponseInner> response) {
                  return response.body();
              }
          });
      }
docs: Get regional availability information for each size category configured under a lab account.
  
  @param resourceGroupName The name of the resource group.
  @param labAccountName The name of the lab Account.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the GetRegionalAvailabilityResponseInner object