JumpPageFunction implements DDMExpressionActionHandlerAware,
			   DDMExpressionFunction.Function2<Number, Number, Boolean> { @Override public Boolean apply(Number fromPage, Number toPage) { if (_ddmExpressionActionHandler == null) { return false; } ExecuteActionRequest.Builder builder = ExecuteActionRequest.Builder.newBuilder("jumpPage"); ExecuteActionRequest executeActionRequest = builder.withParameter( "from", fromPage.intValue() ).withParameter( "to", toPage.intValue() ).build(); _ddmExpressionActionHandler.executeAction(executeActionRequest); return true; }  @Override Boolean apply(Number fromPage, Number toPage); @Override String getName(); @Override void setDDMExpressionActionHandler(
		DDMExpressionActionHandler ddmExpressionActionHandler); static final String NAME; }
@Test public void testNullActionHandler() { JumpPageFunction jumpPageFunction = new JumpPageFunction(); Boolean result = jumpPageFunction.apply(1, 3); Assert.assertFalse(result); }