private void validateSID(String[] args, int i) {
		if (args.length < (i + 1)) {
			displayUsage("Invalid usage, expected username/sid");
			System.exit(-1);
		}
		validateSID(args[i]);
	}
Validate username/sid
@param args command args
@param i argument index
Ghidra/Features/GhidraServer/src/main/java/ghidra/server/ServerAdmin.java