question: returns the number of registered listeners . concode_field_sep L proxy concode_elem_sep List<L> listeners concode_elem_sep long serialVersionUID concode_elem_sep L[] prototypeArray concode_field_sep L[] getListeners concode_elem_sep void createProxy concode_elem_sep void writeObject concode_elem_sep EventListenerSupport<T> create concode_elem_sep L fire concode_elem_sep Object invoke concode_elem_sep void removeListener concode_elem_sep void initializeTransientFields concode_elem_sep InvocationHandler createInvocationHandler concode_elem_sep void addListener concode_elem_sep void addListener concode_elem_sep void readObject
target: int function ( ) { return listeners . size ( ) ; }