code: public Observable<OpenShiftManagedClusterInner> getByResourceGroupAsync(String resourceGroupName, String resourceName) {
          return getByResourceGroupWithServiceResponseAsync(resourceGroupName, resourceName).map(new Func1<ServiceResponse<OpenShiftManagedClusterInner>, OpenShiftManagedClusterInner>() {
              @Override
              public OpenShiftManagedClusterInner call(ServiceResponse<OpenShiftManagedClusterInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets a OpenShift managed cluster.
  Gets the details of the managed OpenShift cluster with a specified resource group and name.
  
  @param resourceGroupName The name of the resource group.
  @param resourceName The name of the OpenShift managed cluster resource.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the OpenShiftManagedClusterInner object