@recative/ap-coreFunctionsDefaultTagDataSourceDefaultTagDataSource CallableDefaultTagDataSource(subscriber: Subscriber<string>): { getter: () => string; unsubscribe: () => void }Parameterssubscriber: Subscriber<string>Returns { getter: () => string; unsubscribe: () => void }getter: () => string(): stringReturns stringunsubscribe: () => void(): voidReturns void