title: Why wrapper around component doesn't see validate method in v-form via ref? (vuetify v-form)
body: <p>I've created a component which contains v-form:</p>
  <p>MyForm.vue</p>
  <pre><code>&lt;v-form v-model=&quot;valid&quot;&gt;
    // custom form
  &lt;/v-form&gt;
  </code></pre>
  <p>Now when I use it in my view MyFormView.vue like that:</p>
  <pre><code>&lt;MyForm v-model=&quot;isValid&quot; ref=&quot;myForm&quot;/&gt;
  </code></pre>
  <p>I can't access the <em>validate()</em> method via ref.</p>
  <pre><code>validateForm() {
    this.$refs.myForm.validate(); // this doesn't work
  }
  </code></pre>
  <p>Why is that?</p>