code: private String generateVersionEleStr() {
          StringBuilder sb = new StringBuilder();
          sb.append(MyBatis3FormattingUtilities.getEscapedColumnName(this.versionColumn));
          sb.append(" = ");
          sb.append("#{version,jdbcType=");
          sb.append(this.versionColumn.getJdbcTypeName());
          if (StringUtility.stringHasValue(this.versionColumn.getTypeHandler())) {
              sb.append(",typeHandler=");
              sb.append(this.versionColumn.getTypeHandler());
          }
          sb.append("}");
          return sb.toString();
      }
docs: 生成版本判断节点
  @return