public function getAllowedParams()
 {
     return array('locations' => array(ApiBase::PARAM_TYPE => 'string', ApiBase::PARAM_REQUIRED => true, ApiBase::PARAM_ISMULTI => true), 'service' => array(ApiBase::PARAM_TYPE => MapsGeocoders::getAvailableGeocoders()), 'props' => array(ApiBase::PARAM_ISMULTI => true, ApiBase::PARAM_TYPE => array('lat', 'lon', 'alt'), ApiBase::PARAM_DFLT => 'lat|lon'));
 }