Does CollaboraOnline provide an API to save files, and if so, where?

I have a problem now, I need to save the file and then do my custom operation, but now the auto-save time in the configuration is up to 20 seconds, too long, I need to save the file faster, but I modify the configuration file has no effect, how to modify, or does CollaboraOnline provide an interface for our developers to call to save files, I hope to get an answer