code: public void setLastNodeExpandedImage(String lastNodeExpandedImage)
      {
          String val = setNonEmptyValueAttribute(lastNodeExpandedImage);
          if (val != null)
              _iState.setLastNodeExpandedImage(setNonEmptyValueAttribute(val));
      }
docs: Sets the image name for an open non-leaf node with no
  line below it.  (Defaults to "lastNodeExpanded.gif").
  @param lastNodeExpandedImage the image name (including extension)
  @jsptagref.attributedescription The image name for an open non-leaf node with no line below it. (Defaults to "lastNodeExpanded.gif".)
  @jsptagref.databindable false
  @jsptagref.attributesyntaxvalue <i>string_imageHandleDownLast</i>
  @netui:attribute required="false"  rtexprvalue="true"
  description="Sets the image name for an open non-leaf node with no
  line below it."