title: how to create password property on loadtest plugin?
body: <p>I created small loadtest plugin in Visual Studio.</p>
  
  <p>Plugin has Password property:</p>
  
  <pre><code>[DisplayName("Password")]
  [Description("Set your password")]
  public string Password {get; set}
  </code></pre>
  
  <p>But password don't replace to asterisks on Property windows.</p>
  
  <p>How to create right password property, that password will replace to asterisks?</p>