void () { myFixture.addClass(""" package p; public class Root extends javafx.scene.layout.GridPane{ public Root(@javafx.beans.NamedArg("axis") javafx.scene.Node node ) { super(node); } public javafx.beans.property.Property<javafx.scene.Node> axis; public void setAxis() {}}\s"""); doTest(getTestName(true) + ".fxml"); }