code: @Trivial
      private void addAttributes(Attributes sourceAttrs, Attributes descAttrs) {
          for (NamingEnumeration<?> neu = sourceAttrs.getAll(); neu.hasMoreElements();) {
              descAttrs.put((Attribute) neu.nextElement());
          }
      }
docs: Add attributes new attributes to an existing {@link Attributes} instance.
  
  @param sourceAttrs The attributes to add.
  @param descAttrs The attributes to add to.