[javadoc-overview] Use stanza factory in example code
[javadoc-overview] Use stanza factory in example code

vanitasvitae/Smack,vanitasvitae/Smack,igniterealtime/Smack,igniterealtime/Smack,Flowdalic/Smack,igniterealtime/Smack,Flowdalic/Smack,vanitasvitae/Smack,Flowdalic/Smack