String selector
) Return a stream that only fires when the particular event fires for elements matching the specified CSS selector.
This is the Dart equivalent to jQuery's delegate.
Source
/**
* Return a stream that only fires when the particular event fires for
* elements matching the specified CSS selector.
*
* This is the Dart equivalent to jQuery's
* [delegate](http://api.jquery.com/delegate/).
*/
Stream<T> matches(String selector);