docs: public final Set<String> getOutputFormatsNames() {
          SortedSet<String> formats = new TreeSet<>();
          for (String formatBeanName: this.outputFormat.keySet()) {
              int endingIndex = formatBeanName.indexOf(MAP_OUTPUT_FORMAT_BEAN_NAME_ENDING);
              if (endingIndex < 0) {
                  endingIndex = formatBeanName.indexOf(OUTPUT_FORMAT_BEAN_NAME_ENDING);
              }
              formats.add(formatBeanName.substring(0, endingIndex));
          }
          return formats;
      }