EXECUTE: Create two CDI projects: ProjectA and ProjectB. ProjectB depends on ProjectA.
EXECUTE: Create interface in ProjectA:

public interface BaseDecoratedInterface {

}

EXECUTE: Create a bean in ProjectA:

import javax.enterprise.event.Observes;

public class CDIBeanTest {
	public void method(@Observes BaseDecoratedInterface event) {
		
	}
}

EXECUTE: Create another bean in ProjectB:

import javax.enterprise.event.Event;
import javax.inject.Inject;

public class TestBean implements BaseDecoratedInterface{
	@Inject
	Event<TestBean> event;
}

EXECUTE: Open CDIBeanTest in Java Editor, point mouse to 'method' method and press Ctrl
ASSERT: There should be "Open CDI Event TestBean.event" menu item in OpenOn window