Is it possible to consturct CellTree form database via rpc

Hi ,

I wonder if celltree can be built dynamically... getNodeInfo is
synchronous, so how to work with a asynchronous, that is , get node
info via a request?

Someone said,

"pass a ListDataProvider or AsyncDataProvider into DefaultNodeInfo.
Then you can return the NodeInfo synchronously, but populate the data
provider asynchronously. "

Is it right when I return defaultNodeinfo , it will wait me to
populate the dataprovider?

if not, could anyone show me more details?

thanks in advance

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