code: public String refreshIncludeTemplateClassNames() {
          if (includedTemplateClasses.isEmpty()) {
              includeTemplateClassNames = NO_INCLUDE_CLASS;
              return NO_INCLUDE_CLASS;
          }
          StringBuilder sb = new StringBuilder();
          boolean first = true;
  
          for (TemplateClass tc : includedTemplateClasses) {
              if (!first) {
                  sb.append(",");
              } else {
                  first = false;
              }
              sb.append(tc.tagName);
          }
          includeTemplateClassNames = sb.toString();
          return sb.toString();
      }
docs: /*
  WRITE : includeTemplateClassNames