title: NotImplementedException is internal proprietary API
body: <p>I got the following warning when I try to build my project with ant. My build.xml ist a auto-generated from eclipse:</p>
  
  <pre><code>warning: NotImplementedException is internal proprietary API and may be removed in a future release
  </code></pre>
  
  <p>In Eclipse there is no error at the line and if i remove the line (are annotation for hibernate) the error will occur in another line. It seems to be that the error comes in the first line of my java file.</p>
  
  <p>I tried to replace hibernate and the annotations with an new version as well as javax persistence. But nothing helped.</p>
  
  <p>I hope someone else has the same failure and knows what i need to do.</p>
  
  <p>EDIT:</p>
  
  <pre><code>@Entity
  @Inheritance(strategy=InheritanceType.TABLE_PER_CLASS)
  @Table(name="myclass")
  public class MYCLASS implements Cloneable {
  </code></pre>
  
  <p>The second row generates the warning. But if i remove the row the next will generate the same warning. If i remove all annotations the last line generates the warning.</p>