SENDING_CHANGES

The document is busy syncing — currently sending its local changes to the server.

If the communication with the server fails, the document will fall back into state DIRTY (and any registered com.pspdfkit.instant.listeners.InstantDocumentListener will be notified about sync error). If all goes well, this state will transition to RECEIVING_CHANGES (and any registered com.pspdfkit.instant.listeners.InstantDocumentListener will be notified).