code: private void addOrderByMethodToExample(TopLevelClass topLevelClass, IntrospectedTable introspectedTable) {
          // 添加orderBy
          Method orderByMethod = JavaElementGeneratorTools.generateMethod(
                  "orderBy",
                  JavaVisibility.PUBLIC,
                  topLevelClass.getType(),
                  new Parameter(FullyQualifiedJavaType.getStringInstance(), "orderByClause")
          );
          commentGenerator.addGeneralMethodComment(orderByMethod, introspectedTable);
          orderByMethod = JavaElementGeneratorTools.generateMethodBody(
                  orderByMethod,
                  "this.setOrderByClause(orderByClause);",
                  "return this;"
          );
          FormatTools.addMethodWithBestPosition(topLevelClass, orderByMethod);
          logger.debug("itfsw(Example增强插件):" + topLevelClass.getType().getShortName() + "增加方法orderBy");
  
          // 添加orderBy
          Method orderByMethod1 = JavaElementGeneratorTools.generateMethod(
                  "orderBy",
                  JavaVisibility.PUBLIC,
                  topLevelClass.getType(),
                  new Parameter(FullyQualifiedJavaType.getStringInstance(), "orderByClauses", true)
          );
          commentGenerator.addGeneralMethodComment(orderByMethod1, introspectedTable);
          orderByMethod1 = JavaElementGeneratorTools.generateMethodBody(
                  orderByMethod1,
                  "StringBuffer sb = new StringBuffer();",
                  "for (int i = 0; i < orderByClauses.length; i++) {",
                  "sb.append(orderByClauses[i]);",
                  "if (i < orderByClauses.length - 1) {",
                  "sb.append(\" , \");",
                  "}",
                  "}",
                  "this.setOrderByClause(sb.toString());",
                  "return this;"
          );
  
          FormatTools.addMethodWithBestPosition(topLevelClass, orderByMethod1);
          logger.debug("itfsw(Example增强插件):" + topLevelClass.getType().getShortName() + "增加方法orderBy(String ... orderByClauses)");
      }
docs: Example增强了setOrderByClause方法，新增orderBy(String orderByClause)方法直接返回example，增强链式调用，可以一路.下去了。
  @param topLevelClass
  @param introspectedTable