获得AppDomain中所有类型标记特定属性的最有效方法是什么？

using System;
using System.Collections.Generic;
using System.Reflection;

public class CustomAttribute : Attribute
{
    public string Name { get; set; }
}

[CustomAttribute(Name = "Class1")]
public class Class1
{
}

[CustomAttribute(Name = "Class2")]
public class Class2
{
}

public static class ReflectionHelper
{
    public static List<Type> GetTypesWithCustomAttribute(AppDomain appDomain)
    {
        List<Type> typesWithCustomAttribute = new List<Type>();

        foreach (Type type in appDomain.GetAssemblies())
        {
            foreach (TypeInfo typeInfo in type.DefinedTypes)
            {
                if (typeInfo.GetCustomAttribute<CustomAttribute>() != null)
                {
                    typesWithCustomAttribute.Add(typeInfo.AsType());
                }
            }
        }

        return typesWithCustomAttribute;
    }
}