public void scheduleCleanupIfUnused() {
        this.plugin.getBootstrap().getScheduler().asyncLater(this::afterOpenFor1Minute, 1, TimeUnit.MINUTES);
    }
Send a message to the socket.

<p>The message will be encoded as JSON and
signed using the public public key.</p>

@param msg the message
common/src/main/java/me/lucko/luckperms/common/webeditor/socket/WebEditorSocket.java