code: public static void addOrSetAttribute(final AttributesImpl atts, final String localName, final String value) {
          addOrSetAttribute(atts, NULL_NS_URI, localName, localName, "CDATA", value);
      }
docs: Add or set attribute. Convenience method for {@link #addOrSetAttribute(AttributesImpl, String, String, String, String, String)}.
  
  @param atts attributes
  @param localName local name
  @param value attribute value