setImageSmoothingEnabled(){
        // noop - HTML Drawer does not deal with this property
    }
This function is ignored by the HTML Drawer. Implementing it is required by DrawerBase.
@param {Boolean} [imageSmoothingEnabled] - Whether or not the image is
drawn smoothly on the canvas; see imageSmoothingEnabled in
{@link OpenSeadragon.Options} for more explanation.