### Question:
DialogStateAdapter implements GriffonPivotAdapter, org.apache.pivot.wtk.DialogStateListener { public void dialogCloseVetoed(org.apache.pivot.wtk.Dialog arg0, org.apache.pivot.util.Vote arg1) { if (dialogCloseVetoed != null) { dialogCloseVetoed.call(arg0, arg1); } }  CallableWithArgs<Vote> getPreviewDialogClose(); CallableWithArgs<Void> getDialogCloseVetoed(); CallableWithArgs<Void> getDialogClosed(); void setPreviewDialogClose(CallableWithArgs<Vote> previewDialogClose); void setDialogCloseVetoed(CallableWithArgs<Void> dialogCloseVetoed); void setDialogClosed(CallableWithArgs<Void> dialogClosed); org.apache.pivot.util.Vote previewDialogClose(org.apache.pivot.wtk.Dialog arg0, boolean arg1); void dialogCloseVetoed(org.apache.pivot.wtk.Dialog arg0, org.apache.pivot.util.Vote arg1); void dialogClosed(org.apache.pivot.wtk.Dialog arg0, boolean arg1);  }### Answer:
@Test public void testDialogCloseVetoed() { final boolean[] invoked = new boolean[1]; CallableWithArgs<Void> callable = new CallableWithArgs<Void>() { public Void call(Object... args) { invoked[0] = true; return null; } }; assertNull(adapter.getDialogCloseVetoed()); adapter.dialogCloseVetoed(null, null); assertFalse(invoked[0]); adapter.setDialogCloseVetoed(callable); adapter.dialogCloseVetoed(null, null); assertTrue(invoked[0]); }