@Override
    public Stream<Sender> getOnlineSenders() {
        return Stream.concat(
                Stream.of(getConsoleSender()),
                this.bootstrap.getProxy().getAllPlayers().stream().map(p -> this.senderFactory.wrap(p))
        );
    }
LuckPerms implementation for the Velocity API.
velocity/src/main/java/me/lucko/luckperms/velocity/LPVelocityPlugin.java