Autocomplete required items

[laeubi]

If I add a <plugin> tag via autocompletion I get an error immediately:

it would be good if required tags are automatically created and even best if one can the tab trough them to fill them with content.

[mickaelistria]

Inserting artifactId here seems like a good idea, especially because the next completion capabilities are that stage are about inserting the artifactId, so adding artifactId is a good hint.