I want to ask whether the order in the meshes array in the container is fixed when the LoadAssetContainer method is used to import the same model in any case。Looking forward to your reply
Yes, the elements in the arrays should be deterministic when loading the same model. But would be great to understand the full use case. If you can show the code you are using we will be able to provide a better answer (probably 
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Thank you very much for your reply. I just want to number the nodes using the index of the array when loading the model, and there are no special use cases. I just want to confirm if this method has stability
It should be stable, yes. There is no reason I can think of why the meshes added from a single load command to have a different order. Of course, assuming you are doing the same thing every time
Thank you very much for your answer. It has been very helpful to me