code: @Override
      public boolean sqlMapDeleteByExampleElementGenerated(XmlElement element, IntrospectedTable introspectedTable) {
          if (this.versionColumn != null) {
              this.sqlMaps.get(introspectedTable).add(
                      this.replaceExampleXmlElement(introspectedTable, element, METHOD_DELETE_WITH_VERSION_BY_EXAMPLE)
              );
          }
          return super.sqlMapDeleteByExampleElementGenerated(element, introspectedTable);
      }
docs: ========================================= sqlMap 生成 ============================================