What is the bug?

When editing mappings, some fields types are reported as not accepted (e.g. match_only_text, wildcard, etc). It is still possible to save the document, but the warning is misleading and completion is incomplete.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Attempt to add one of these mapping in the JSON editor.

What is the expected behavior?
All supported mappings should be listed in completion. When used, they should not be underlined as an error.

Do you have any screenshots?