title: Angular 4 & Material Stepper
body: <p>Is it possible to reset (or just jump to the first step) inside of a <a href="https://material.angular.io/components/stepper/overview" rel="noreferrer"> stepper</a>?
  It is not documented in the docs, but is it possible to do so?
  It is stated in the docs that the stepper is built on "CDK Stepper" (<a href="https://github.com/angular/material2/blob/master/src/cdk/stepper/stepper.ts" rel="noreferrer">link</a>?), but I can't find any examples which lead me to my goal.</p>