code: public JsonArray add(org.jmxtrans.agent.util.json.JsonValue value) {
      if (value == null) {
        throw new NullPointerException("value is null");
      }
      values.add(value);
      return this;
    }
docs: Appends the specified JSON value to the end of this array.
  
  @param value
  the JsonValue to add to the array, must not be <code>null</code>
  @return the array itself, to enable method chaining