Default adding text - 'Adding'
Custom adding text - 'Choose this to add'
Customize the text displayed for adding options. The default is 'Adding 'text''. When set, it will be displayed as 'displayText 'text''.
Allow custom items to be added by the user. Note: `control` must accept `string` type if set to `true`.
default placeholder when there's no entry yet
This event carries the item that was removed.