Testing Foreign keys and Urlnodes in jtree/treeDB

[ghost]

Note: Post edited for clarity:

Is there a way to more thoroughly test foreign keys and urnodes in jtree ?

I cant seem to find a link on treeDB and foreign keys here (I am sorry) so referring to foreign keys in trenotation is a bit hard, for normal users. For urlnodes: Url error code detection would be nice. Link rot protection tests based on Wikipedia's policy on URL link rot (https://en.wikipedia.org/wiki/Wikipedia:Link_rot) detect typos in URL for example using

• Many modern browsers now support phishing/XSS attacks prevention plugins,
• HTTPS certificate checking for URL Nodes could also be leveraged to an extent for the same purpose.
• Optional check for return MIME type of url nodes responses