d
 bean</a>. Defines everything the container needs to know about an observer method.
 </p>
 
 <p>
 If a custom implementation of this interface does not override either <a href="../../../../javax/enterprise/inject/spi/ObserverMethod.html#notify-T-"><code>notify(Object)</code></a> or
 <a href="../../../../javax/enterprise/inject/spi/ObserverMethod.html#notify-javax.enterprise.inject.spi.EventContext-"><code>notify(EventContext)</code></a>, the container automatically detects the problem and treats it as a d