William Bakker

Hi @LorenzoBettini , You can define a `GUITestExtension` as following: ```java import org.assertj.swing.junit.runner.FailureScreenshotTaker; import org.assertj.swing.junit.runner.ImageFolderCreator; import org.junit.jupiter.api.extension.Extension; import org.junit.jupiter.api.extension.ExtensionContext; import org.junit.jupiter.api.extension.InvocationInterceptor; import org.junit.jupiter.api.extension.ReflectiveInvocationContext; import java.lang.reflect.Method; import static org.assertj.swing.annotation.GUITestFinder.isGUITest; import static...