'Wrapper for render_item.
@param list_id: the HTML ID of the list
@param item_id: the HTML ID of the item
@param resource: the S3Resource to render
@param rfields: the S3ResourceFields to render
@param record: the record as dict'

def __call__(self, list_id, item_id, resource, rfields, record):

    item = DIV(_id=item_id, _class=self.item_class)
    header = self.render_header(list_id, item_id, resource, rfields, record)
    if (header is not None):
        item.append(header)
    body = self.render_body(list_id, item_id, resource, rfields, record)
    if (body is not None):
        item.append(body)
    return item
