al", 0 , impl.getAttributeResolvers().size() );          final AzAttributeResolver testAr0 = new TestAttributeResolver( new AttributeImpl("0") );         final AzAttributeResolver testAr0 = new TestAttributeResolver( new AttributeImpl("0") );          assertTrue( "append 0", impl.appendAttributeResolver( testAr0 ) );         assertFalse( "append 0", impl.appendAttributeResolver( testAr0 ) );         assertTrue( "append 0", impl.appendAttributeResolver( testAr0 ) );         assertFalse( "append 0", impl.appendAttributeResolver( testAr0 ) );         