attributes problem

I have the following class:

public interface Alias
{
  public String getAlias();

  /**
   * @persistent true
   */
  public void setAlias( String alias );
}

Then I run:
System.out.println( Attributes.hasAttribute( Alias.class.getMethod(
"setAlias", new Class[] {String.class} ), "persistent" ) );
System.out.println( Attributes.getAttribute( Alias.class.getMethod(
"setAlias", new Class[] {String.class} ), "persistent" ) );

which results in 
false
null

Any ideas about what I'm doing wrong?  I think I'm doing the same thing
as what's in the Job example, which apparently works.

Thanks,
Steve

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