code: @Override
      public boolean sqlMapUpdateByPrimaryKeySelectiveElementGenerated(XmlElement element, IntrospectedTable introspectedTable) {
          generatedWithSelective(element, introspectedTable, false);
          return super.sqlMapUpdateByPrimaryKeySelectiveElementGenerated(element, introspectedTable);
      }
docs: 具体执行顺序 http://www.mybatis.org/generator/reference/pluggingIn.html
  @param element
  @param introspectedTable
  @return