One use case for getting a promise back is if you are uploading a bunch of files and you want to check if any of them failed and do some operation to either auto try that specific one or help the user figure out which one failed.
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One use case for getting a promise back is if you are uploading a bunch of files and you want to check if any of them failed and do some operation to either auto try that specific one or help the user figure out which one failed.