public function setFetchParameters($override = array())
 {
     $params = $this->ini->hasGroup('DefaultFetchParams') ? $this->ini->group('DefaultFetchParams') : array();
     if ($this->mainClass) {
         if ($this->ini->hasGroup('DefaultFetchParamsForClassIdentifier_' . $this->mainClass->attribute('identifier'))) {
             $params = $this->ini->group('DefaultFetchParamsForClassIdentifier_' . $this->mainClass->attribute('identifier')) + $params;
         }
         $params = array('ClassFilterType' => 'include', 'ClassFilterArray' => array($this->mainClass->attribute('identifier'))) + $params;
     }
     $this->fetchParameters = $override + $params;
 }