title: drawing with clear color on UIView (cutting a hole) in static method
body: <p>I have an iPhone application and I need to implement the following method:</p>
  
  <pre><code>+(UITextView *)textView:(UITextView *) withCuttedRect:(CGRect)r
  </code></pre>
  
  <p>This method must cut (fill with <code>[UIColor clearColor]</code>) the rect <code>r</code> from <code>UITextView</code> and return <code>UITextView</code> object.</p>
  
  <p>The user will see the view behind <code>UITextView</code> from the cutted holes.</p>
  
  <p>How can it be done?</p>