code: public void addAttribute(String name, String type, String value) {
          names.add(name);
          types.add(type);
          values.add(value);
      }
docs: Add an attribute to an attribute list.
  
  <p>This method is provided for SAX parser writers, to allow them
  to build up an attribute list incrementally before delivering
  it to the application.</p>
  
  @param name The attribute name.
  @param type The attribute type ("NMTOKEN" for an enumeration).
  @param value The attribute value (must not be null).
  @see #removeAttribute
  @see org.xml.sax.DocumentHandler#startElement