title: Replacing 'GetTimeZoneTypeEnum' class with kentico 9 API
body: <p>I upgraded my kentico project from 8.2 to 9.
  In version 9 'GetTimeZoneTypeEnum' class is removed but in my project it is used at some places. How Can I replace that with version 9 API.
  I referred kentico 9 API, they said to use 'EnumStringRepresentationExtensions' class. I tried to work with that but that isn't working.</p>
  
  <p>My code snippet is:</p>
  
  <pre><code>if (GetValue("timezonetype") != null)            
  {
    timePicker.TimeZone = TimeZoneInfoProvider.**GetTimeZoneTypeEnum**(ValidationHelper.GetString(GetValue("timezonetype"), ""));
  }
  </code></pre>
  
  <p>Getting error at <strong>GetTimeZoneTypeEnum</strong>. Can anyone give some more details to resolve this?</p>