code: public ServiceFuture<ContainerGroupInner> getByResourceGroupAsync(String resourceGroupName, String containerGroupName, final ServiceCallback<ContainerGroupInner> serviceCallback) {
          return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, containerGroupName), serviceCallback);
      }
docs: Get the properties of the specified container group.
  Gets the properties of the specified container group in the specified subscription and resource group. The operation returns the properties of each container group including containers, image registry credentials, restart policy, IP address type, OS type, state, and volumes.
  
  @param resourceGroupName The name of the resource group.
  @param containerGroupName The name of the container group.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object