/**
* remove a specific bidListenerlistener
*
* @param listener the listener to remove from the list
* @return true if it was successfully removed
*/
public boolean removeBidListener(BidListener listener) {
return bidListeners.remove(listener);
}
/**
* Appends the specified element to the end of this list.
*
* @param bidListener element to be appended to this list
* @return {@code true} (as specified by {@link java.util.Collection#add})
*/
public boolean addBidListener(BidListener bidListener) {
return bidListeners.add(bidListener);
}