/**
  * Return an enumeration of all prefixes declared in this context.
  *
  * <p>The empty (default) prefix will be included in this enumeration; note that this behaviour
  * differs from that of {@link #getPrefix} and {@link #getPrefixes}.
  *
  * @return An enumeration of all prefixes declared in this context.
  * @see #getPrefixes
  * @see #getURI
  */
 public Enumeration getDeclaredPrefixes() {
   return currentContext.getDeclaredPrefixes();
 }