code: @TimerJ
      public IndexMetadataBuilder addOption(String option, Boolean value) {
          if (options == null) {
              options = new HashMap<Selector, Selector>();
          }
          options.put(new StringSelector(option), new BooleanSelector(value));
          return this;
      }
docs: Adds a new boolean option.
  
  @param option the option
  @param value  the value
  @return the index metadata builder