Method ngOnChanges

src/cdk/stepper/stepper.ts:295–299

()

  }

  ngOnChanges() {
    // Since basically all inputs of the MatStep get proxied through the view down to the
    // underlying MatStepHeader, we have to make sure that change detection runs correctly.
    this._stepper._stateChanged();
  }

  _markAsInteracted() {
    if (!this._interacted()) {