I want use Django 2+ autocomplete_fields.
Adding them into (source) ModelAdmin will give lot of errors (see bellow).
So I must add a (target) ModelAdmin with search_fields=...
After that everything works.
However I don't want to have such new ModelAdmin's visible/accessible.
I have data of their models already much better accessible in Inlines.
Is there a way how to give search_fields=.. and not show the new ModelAdmin?
Thank you.
```
ERRORS:
<class 'apps.rap.admin.PartCodeInline'>: (admin.E039) An admin for model "PartVariant" has to be registered to be referenced by PartCodeInline.autocomplete_fields.
<class 'apps.rap.admin.PartCodeInline'>: (admin.E040) PartCodeTypeAdmin must define "search_fields", because it's referenced by PartCodeInline.autocomplete_fields.
<class 'apps.rap.admin.PartSizeInline'>: (admin.E039) An admin for model "Size" has to be registered to be referenced by PartSizeInline.autocomplete_fields.
<class 'apps.rap.admin.PartSubGroupInline'>: (admin.E039) An admin for model "Size" has to be registered to be referenced by PartSubGroupInline.autocomplete_fields.
```