/* (non-Javadoc)
  * @see java.lang.Object#equals(java.lang.Object)
  */
 public boolean equals(Object other) {
   if (this == other) return true;
   if (!(other instanceof CVSCompareSubscriber)) return false;
   CVSCompareSubscriber s = (CVSCompareSubscriber) other;
   CVSResourceVariantTree tree1 = (CVSResourceVariantTree) getRemoteTree();
   CVSResourceVariantTree tree2 = (CVSResourceVariantTree) s.getRemoteTree();
   IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
   CVSTag tag1 = tree1.getTag(root);
   CVSTag tag2 = tree2.getTag(root);
   if (tag1 == null || tag2 == null) return false;
   return tag1.equals(tag2) && rootsEqual(s);
 }
 public CVSTag getTag() {
   return tree.getTag(ResourcesPlugin.getWorkspace().getRoot());
 }