APF_TaxonomyField::cell_APF_TaxonomyField PHP Method

    public function cell_APF_TaxonomyField($sCellHTML, $sColumnSlug, $iTermID)
    {
        // cell_{instantiated class name}
        if (!$iTermID || $sColumnSlug != 'thumbnail') {
            return $sCellHTML;
        }
        $aOptions = get_option('APF_TaxonomyField', array());
        // by default the class name is the option key.
        return isset($aOptions[$iTermID]['image_upload']) && $aOptions[$iTermID]['image_upload'] ? "<img src='{$aOptions[$iTermID]['image_upload']}' style='max-height: 72px; max-width: 120px;'/>" : $sCellHTML;
    }