code: public Observable<ExpressRouteCircuitAuthorizationInner> beginCreateOrUpdateAsync(String resourceGroupName, String circuitName, String authorizationName, ExpressRouteCircuitAuthorizationInner authorizationParameters) {
          return beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, circuitName, authorizationName, authorizationParameters).map(new Func1<ServiceResponse<ExpressRouteCircuitAuthorizationInner>, ExpressRouteCircuitAuthorizationInner>() {
              @Override
              public ExpressRouteCircuitAuthorizationInner call(ServiceResponse<ExpressRouteCircuitAuthorizationInner> response) {
                  return response.body();
              }
          });
      }
docs: Creates or updates an authorization in the specified express route circuit.
  
  @param resourceGroupName The name of the resource group.
  @param circuitName The name of the express route circuit.
  @param authorizationName The name of the authorization.
  @param authorizationParameters Parameters supplied to the create or update express route circuit authorization operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ExpressRouteCircuitAuthorizationInner object