Function getNodes

src/material/tree/tree-using-tree-control.spec.ts:753–755

(treeElement: Element)

}

function getNodes(treeElement: Element): HTMLElement[] {
  return [].slice.call(treeElement.querySelectorAll('.mat-tree-node, .mat-nested-tree-node'))!;
}

function expectFlatTreeToMatch(
  treeElement: Element,