code: public Observable<OperationStatusResponseInner> revokeAccessAsync(String resourceGroupName, String diskName) {
          return revokeAccessWithServiceResponseAsync(resourceGroupName, diskName).map(new Func1<ServiceResponse<OperationStatusResponseInner>, OperationStatusResponseInner>() {
              @Override
              public OperationStatusResponseInner call(ServiceResponse<OperationStatusResponseInner> response) {
                  return response.body();
              }
          });
      }
docs: Revokes access to a disk.
  
  @param resourceGroupName The name of the resource group.
  @param diskName The name of the managed disk that is being created. The name can't be changed after the disk is created. Supported characters for the name are a-z, A-Z, 0-9 and _. The maximum name length is 80 characters.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request