@Override
	public String[] getAllUsers() throws IOException {
		if (readOnly) {
			return new String[0];
		}
		return mgr.getAllUsers(currentUser);
	}
RMI callback when instance becomes unreferenced by any remote client
Ghidra/Features/GhidraServer/src/main/java/ghidra/server/remote/RepositoryServerHandleImpl.java