private String getValue(Object[] objects) {
   StringBuffer buffer = new StringBuffer();
   for (Object object : objects) {
     IPackageFragment fragment = (IPackageFragment) object;
     if (buffer.length() > 0)
       buffer.append("," + getLineDelimiter() + " "); // $NON-NLS-1$ //$NON-NLS-2$
     buffer.append(fragment.getElementName());
   }
   return buffer.toString();
 }