/**
* Update the configuration for Solr. See $solr_options for a discussion of the accepted array keys
* @param array $options - The options to update
*/
static function configure_server($options = array())
{
self::$solr_options = array_merge(self::$solr_options, $options);
self::$merged_solr_options = null;
self::$service_singleton = null;
self::$service_core_singletons = array();
}