API Version: 4.0
Library Version: 4.13.1
Generated by gi-docgen 2023.2
property expression: Gtk.Expression [ read, write ]
An expression to evaluate to obtain strings to match against the search term.
See GtkDropDown:enable-search for how to enable search.
If GtkDropDown:factory is not set, the expression is also
used to bind strings to labels produced by a default factory.