Looking for advice from developers phamiliar with PHP, or Phabricator internals, on how to make Phabricator to have PlantUML (text to UML diagrams) within wiki pages, tasks. So that this UML code snippet in GitHub/GitLab grammar
```plantuml
Bob->Alice : hello
```
would be shown as diagram on rendered wiki page.
"Call it from PHP" page on https://plantuml.com/demophp.php is 404 - Not Found
.
UPDATE Please add answer with any further improvements or suggestions.