code: public List<Section> getTickmarkSections() {
          List<Section> tickmarkSectionsCopy = new ArrayList<Section>(10);
          tickmarkSectionsCopy.addAll(tickmarkSections);
          return tickmarkSectionsCopy;
      }
docs: Returns a list of section objects that will be used to display
  to display the tickmark sections of a gauge with their different colors.
  @return a list of section objects that represents the tickmark sections of the gauge