code: public final void deleteOperation(String name) {
  
      DeleteOperationRequest request = DeleteOperationRequest.newBuilder().setName(name).build();
      deleteOperation(request);
    }
docs: Deletes a long-running operation. This method indicates that the client is no longer interested
  in the operation result. It does not cancel the operation. If the server doesn't support this
  method, it returns `google.rpc.Code.UNIMPLEMENTED`.
  
  <p>Sample code:
  
  <pre><code>
  try (OperationsClient operationsClient = OperationsClient.create()) {
  String name = "";
  operationsClient.deleteOperation(name);
  }
  </code></pre>
  
  @param name The name of the operation resource to be deleted.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails