Bug 44582

Please add a new API getPublicIDs() to org.apache.xml.resolver.Catalog.java.

An implementation may look like this:

  /**
   * Return all registered public IDs.
   */
  public Iterator getPublicIDs() {
      Vector v = new Vector();
      Enumeration enumeration = catalogEntries.elements();

      while (enumeration.hasMoreElements()) {
        CatalogEntry e = (CatalogEntry) enumeration.nextElement();
        if (e.getEntryType() == PUBLIC) {
            v.add(e.getEntryArg(0));
        }
      }
      return v.iterator();
  }