BP_Search::instance()

		public static function instance() {
			// Store the instance locally to avoid private static replication
			static $instance = null;

			// Only run these methods if they haven't been run previously
			if ( null === $instance ) {
				$instance = new self();

				//create instances of helpers and associate them with types
				add_action( 'init', array( $instance, 'load_search_helpers' ), 80 );

				add_action( 'wp_ajax_bp_search_ajax', array( $instance, 'ajax_search' ) );
				add_action( 'wp_ajax_nopriv_bp_search_ajax', array( $instance, 'ajax_search' ) );
			}

			// Always return the instance
			return $instance;
		}