function findExtantNode(fullPath) {
                var $treeItems = testWindow.$("#project-files-container li"),
                    $result;

                var name = getItemName(fullPath);

                $treeItems.is(function () {
                    var $treeNode = testWindow.$(this);
                    if ($treeNode.children("a").text().trim() === name) {
                        $result = $treeNode;
                        return true;
                    }
                    return false;
                });
                return $result;
            }
ProjectManager pauses between renders for performance reasons. For some tests,
we'll need to wait for the next render.