public JavaVersion call() {
                JavaVersion moduleTargetBytecodeLevel = project.getExtensions().getByType(JavaPluginExtension.class).getTargetCompatibility();
                return includeModuleBytecodeLevelOverride(project.getRootProject(), moduleTargetBytecodeLevel) ? moduleTargetBytecodeLevel : null;
            }

        });
        convention.map("languageLevel", new Callable<IdeaLanguageLevel>() {