Disable search on select multiple

How to disable search on a select multiple?

This does not work:

return $select
    ->multiple()
    ->options($groupedOptions)
    ->preload()
    ->searchable(false);

return $select
    ->multiple()
    ->options($groupedOptions)
    ->preload()
    ->searchable(false);

return $select
    ->multiple()
    ->options($groupedOptions)
    ->preload()
    ->searchable(false);

return $select
    ->multiple()
    ->options($groupedOptions)
    ->preload()
    ->searchable(false);