code: protected String buildSingleAttributeDefinitionLine(final String attributeName, final Object value) {
          return new StringBuilder()
              .append("<cas:".concat(attributeName).concat(">"))
              .append(encodeAttributeValue(value))
              .append("</cas:".concat(attributeName).concat(">"))
              .toString();
      }
docs: Build single attribute definition line.
  
  @param attributeName the attribute name
  @param value         the value
  @return the string