* @param component WOComponent to evaluate the associations in
* @return NSMutableArray containing the hotKeys being used by ERXAccessibleSubmitButtons on this page
*/
protected NSMutableArray usedHotKeys(WOComponent component) {
WOResponse response = component.context().response();
NSDictionary userInfo = response.userInfo();
if (userInfo == null) {
userInfo = new NSMutableDictionary(new NSMutableArray(), ERXAccessibleSubmitButton.class.getName());
response.setUserInfo(userInfo);
}