protected function includes() {
		require $this->dir . 'functions.php';
		require $this->dir . 'template-tags.php';
		require $this->dir . 'widgets.php';

		// Test suite requires the AJAX functions early.
		if ( function_exists( 'tests_add_filter' ) ) {
			require $this->dir . 'ajax.php';

		// Load AJAX code only on AJAX requests.
		} else {
			add_action( 'admin_init', function() {
				// AJAX condtion.
				if ( defined( 'DOING_AJAX' ) && true === DOING_AJAX &&
					// Check to see if action is activity-specific.
					( false !== strpos( $_REQUEST['action'], 'activity' ) || ( 'post_update' === $_REQUEST['action'] ) )
				) {
					require bp_nouveau()->activity->dir . 'ajax.php';
				}
			} );
		}
	}