code: private void buildSectionTitle(MarkupDocBuilder markupDocBuilder, String title) {
          if (config.getPathsGroupedBy() == GroupBy.AS_IS) {
              markupDocBuilder.sectionTitleLevel3(title);
          } else {
              markupDocBuilder.sectionTitleLevel4(title);
          }
      }
docs: Adds a operation section title to the document.
  
  @param title the section title