/*
  * @see org.argouml.uml.ui.AbstractUMLModelElementListModel2Test#fillModel()
  */
 protected Object[] fillModel() {
   Object[] messages = new Object[10];
   for (int i = 0; i < messages.length; i++) {
     messages[i] = Model.getCollaborationsFactory().createMessage();
     Model.getCollaborationsHelper().addMessage(getElem(), messages[i]);
   }
   return messages;
 }
 /*
  * @see org.argouml.uml.ui.AbstractUMLModelElementListModel2Test#fillModel()
  */
 protected Object[] fillModel() {
   Object[] inter = new Object[NO_OF_ELEMENTS];
   for (int i = 0; i < NO_OF_ELEMENTS; i++) {
     inter[i] = Model.getCollaborationsFactory().createInteraction();
     Model.getCollaborationsHelper().setContext(inter[i], getElem());
   }
   return inter;
 }
 /*
  * @see org.argouml.uml.ui.AbstractUMLModelElementListModel2Test#fillModel()
  */
 protected Object[] fillModel() {
   Object[] constraints = new Object[10];
   for (int i = 0; i < constraints.length; i++) {
     constraints[i] = Model.getCoreFactory().createConstraint();
     Model.getCollaborationsHelper().addConstrainingElement(getElem(), constraints[i]);
   }
   return constraints;
 }
 /*
  * @see org.argouml.uml.ui.AbstractUMLModelElementListModel2Test#removeHalfModel(Object[])
  */
 protected void removeHalfModel(Object[] elements) {
   for (int i = 0; i < 5; i++) {
     Model.getCollaborationsHelper().removeMessage(getElem(), elements[i]);
   }
 }
 /*
  * @see org.argouml.uml.ui.AbstractUMLModelElementListModel2Test#removeHalfModel(Object[])
  */
 protected void removeHalfModel(Object[] elements) {
   for (int i = 0; i < NO_OF_ELEMENTS / 2; i++) {
     Model.getCollaborationsHelper().removeInteraction(getElem(), elements[i]);
   }
 }
 /** @see junit.framework.TestCase#setUp() */
 protected void setUp() throws Exception {
   super.setUp();
   base = Model.getCoreFactory().createClass();
   Model.getCollaborationsHelper().addBase(getElem(), base);
 }
 /*
  * @see org.argouml.uml.ui.UMLModelElementListModel2#buildModelList()
  */
 protected void buildModelList() {
   setAllElements(Model.getCollaborationsHelper().allAvailableFeatures(getTarget()));
 }