Plugins can query the schema to find out more information about the qualifiers defined in the current application.
qualifier must be one of the
QUAL properties. You should not rely on the exact underlying type of this value in your code.
Each qualifier information object contains the following keys:
The name of the qualifier, suitable for displaying to the user.
The API code for the qualifier, eg
"dc:qualifier:alternative". May be
undefined if the qualifier does not have an API code.
The short name, or “search name”, of the qualifier. Used in search constraints.