private Method findMethod(Class<?>[] classes, Class<?> parameterClass) {
    for (Class<?> clazz : classes) {
        if (nonNull(clazz.getAnnotation(XmlRegistry.class))) {
            for (Method method : ReflectionUtils.getAllDeclaredMethods(clazz)) {
                if (byParameterType(method, parameterClass) && byReturnType(method, parameterClass) && byAnnotation(method)) {
                    return method;
                }
            }
        }
    }
    return null;
}