title: TMPro not found in Visual Studio Code
body: <p>I'm using <code>Visual Studio Code</code> to write my code for Unity.
  The following extension I've added to Visual Studio Code:
  C#, Debugger for Unity, Unity Code Snippets &amp; Unity Tools</p>
  
  <p>Using TMPro to work with TextMeshPro components throws me this error: </p>
  
  <pre><code>Unnecessary using directive. [Assembly-CSharp]csharp(CS8019)
  The type or namespace name 'TMPro' could not be found (are you missing a using directive or an assembly reference?) [Assembly-CSharp, Assembly-CSharp, Assembly-CSharp, Assembly-CSharp, Assembly-CSharp, Assembly-CSharp, Assembly-CSharp]csharp(CS0246)
  </code></pre>
  
  <p>On the bright-side, in <code>Unity Editor</code> no errors are thrown, but it is still annoying.</p>
  
  <p>Does anybody know if there's an additional Extension I have to download or how to fix this issue?</p>
  
  <p>Best</p>