docs: function elementStart(index, name, attrs, localRefs) {
      ngDevMode &&
          assertEqual(viewData[BINDING_INDEX], -1, 'elements should be created before any bindings');
      ngDevMode && ngDevMode.rendererCreateElement++;
      var native = elementCreate(name);
      ngDevMode && assertDataInRange(index - 1);
      var node = createLNode(index, 3 /* Element */, native, name, attrs || null, null);
      currentElementNode = node;
      if (attrs) {
          setUpAttributes(native, attrs);
      }
      appendChild(getParentLNode(node), native, viewData);
      createDirectivesAndLocals(localRefs);
      return native;
  }