title: Blazor Render Fragment Child Content to allow only certain components?
body: <p>Is it possible to restrict the RenderFragment Child Content of a component to only  allow certain components?
  For example
  <strike></p>
  <pre><code>&lt;MyParentComponent&gt;
   &lt;Children&gt;
    &lt;AcceptedChild/&gt;
    &lt;InvalidChild/&gt; &lt;-- throw err since it shouldn't be accepted
   &lt;/Children&gt;
  &lt;/MyParentComponent&gt;
  
  </code></pre>
  </strike>
  <p>EDIT:</p>
  <pre><code>&lt;DataGrid&gt;
   &lt;DataGridColumns&gt;
    &lt;DataGridColumn/&gt;
    &lt;DataGridColumn/&gt;
    &lt;NotADataGridColumn/&gt; &lt;--- throw error
   &lt;/DataGridColumns&gt;
  &lt;/DataGrid&gt;
  
  </code></pre>