code: public ServiceFuture<ConnectivityInformationInner> checkConnectivityAsync(String resourceGroupName, String networkWatcherName, ConnectivityParameters parameters, final ServiceCallback<ConnectivityInformationInner> serviceCallback) {
          return ServiceFuture.fromResponse(checkConnectivityWithServiceResponseAsync(resourceGroupName, networkWatcherName, parameters), serviceCallback);
      }
docs: Verifies the possibility of establishing a direct TCP connection from a virtual machine to a given endpoint including another VM or an arbitrary remote server.
  
  @param resourceGroupName The name of the network watcher resource group.
  @param networkWatcherName The name of the network watcher resource.
  @param parameters Parameters that determine how the connectivity check will be performed.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object