@Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (!(obj instanceof Message)) {
            return false;
        }
        Message that = (Message) obj;
        return Objects.equals(this.message, that.message);
    }
Standard format for regular successful REST API responses that look like:
<pre>
    {
        "message": "Message goes here."
    }
</pre>
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/entities/Message.java