title: How to judge a TypeElement or TypeMirror is subClass of other one?
body: <p>I have two class.</p>
  
  <pre><code>Class A&lt;T&gt;{
  }
  
  Class B extend A&lt;String&gt;{
  }
  </code></pre>
  
  <p>I want to judge if TypeElement of B is subclass of A ?
  So i try,</p>
  
  <pre><code>TypeElement elementA = A.getElement();
  TypeElement elementB = B.getElement();
  
  processingEnv.getTypeUtils().isAssignable(elementB.asType(),elementA.asType())//return false(i think it show return true)
  processingEnv.getTypeUtils().isSubtype(elementB.asType(),elementA.asType())//return false(i think it show return true)
  </code></pre>