1 package org.omg.uml.behavioralelements.collaborations;2 3 public interface AMessage2Sender extends javax.jmi.reflect.RefAssociation {4 public boolean exists(org.omg.uml.behavioralelements.collaborations.Message message2, org.omg.uml.behavioralelements.collaborations.ClassifierRole sender);5 public java.util.Collection getMessage2(org.omg.uml.behavioralelements.collaborations.ClassifierRole sender);6 public org.omg.uml.behavioralelements.collaborations.ClassifierRole getSender(org.omg.uml.behavioralelements.collaborations.Message message2);7 public boolean add(org.omg.uml.behavioralelements.collaborations.Message message2, org.omg.uml.behavioralelements.collaborations.ClassifierRole sender);8 public boolean remove(org.omg.uml.behavioralelements.collaborations.Message message2, org.omg.uml.behavioralelements.collaborations.ClassifierRole sender);9 }10