public static function createFilter($key, $options = array(), TBGSavedSearch $search = null)
 {
     if (isset($options['o'])) {
         $options['operator'] = $options['o'];
     }
     if (isset($options['v'])) {
         $options['value'] = $options['v'];
     }
     $options = array_merge(array('operator' => '=', 'value' => ''), $options);
     $filter = new TBGSearchFilter();
     $filter->setFilterKey($key);
     $filter->setOperator($options['operator']);
     $filter->setValue($options['value']);
     $filter->setSearchId($search);
     return $filter;
 }