code: public Observable<EventHubConnectionInner> getAsync(String resourceGroupName, String clusterName, String databaseName, String eventHubConnectionName) {
          return getWithServiceResponseAsync(resourceGroupName, clusterName, databaseName, eventHubConnectionName).map(new Func1<ServiceResponse<EventHubConnectionInner>, EventHubConnectionInner>() {
              @Override
              public EventHubConnectionInner call(ServiceResponse<EventHubConnectionInner> response) {
                  return response.body();
              }
          });
      }
docs: Returns an Event Hub connection.
  
  @param resourceGroupName The name of the resource group containing the Kusto cluster.
  @param clusterName The name of the Kusto cluster.
  @param databaseName The name of the database in the Kusto cluster.
  @param eventHubConnectionName The name of the event hub connection.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the EventHubConnectionInner object