The search window is missing an option in query builder mode for filtering Audio Random Container assets.

*Repro*
# Open the Search window (⌘K).
# Toggle the query builder mode on (F1).
# Click on the plus button in the search bar to add a new query block (Tab).
# Navigate to Types.
# Scroll down to look for Audio Random Container.

Expected: An option to choose Audio Random Container is there and it will filter the query with the appropriate assets.

Actual: There's no option to choose Audio Random Container.

*Note*

This is likely due to the class being marked as internal. You can actually use a workaround to search for Audio Random Container assets by either typing it in the search field or explicitly typing "t:AudioRandomContainer".