jodd-core/src/main/java/jodd/util/ClassUtil.java
public static boolean isKotlinClass(final Class type) {
		final Annotation[] annotations = type.getAnnotations();
		for (Annotation annotation : annotations) {
			if (annotation.annotationType().getName().equals("kotlin.Metadata")) {
				return true;
			}
		}
		return false;
	}
public static boolean isKotlinClass(final Class type) {
		final Annotation[] annotations = type.getAnnotations();
		for (Annotation annotation : annotations) {
			if (annotation.annotationType().getName().equals("kotlin.Metadata")) {
				return true;
			}
		}
		return false;
	}
Returns {@code true} if type is a Kotlin class.