code: public Observable<ContainerGroupInner> deleteAsync(String resourceGroupName, String containerGroupName) {
          return deleteWithServiceResponseAsync(resourceGroupName, containerGroupName).map(new Func1<ServiceResponse<ContainerGroupInner>, ContainerGroupInner>() {
              @Override
              public ContainerGroupInner call(ServiceResponse<ContainerGroupInner> response) {
                  return response.body();
              }
          });
      }
docs: Delete the specified container group.
  Delete the specified container group in the specified subscription and resource group. The operation does not delete other resources provided by the user, such as volumes.
  
  @param resourceGroupName The name of the resource group.
  @param containerGroupName The name of the container group.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ContainerGroupInner object