code: public void setIsmap(String ismap) {
          _imageState.registerAttribute(AbstractHtmlState.ATTR_GENERAL, HtmlConstants.ISMAP, ismap);
      }
docs: Sets the server-side image map declaration for the HTML image tag.
  
  @param ismap the image map declaration.
  @jsptagref.attributedescription The server-side map declaration for the HTML image tag.
  @jsptagref.attributesyntaxvalue <i>string_isMap</i>
  @netui:attribute required="false" rtexprvalue="true"
  description="The server-side map declaration for the HTML image tag."