Unityで割り当てられているクラスIDからクラス名を取得する処理

ClassNameGetter.cs

using System.Reflection;
using UnityEditor;

public static string GetClassName(int classId)
{
    var assembly = Assembly.GetAssembly(typeof(MonoScript));
    var unityType = assembly.GetType("UnityEditor.UnityType");
    var classObject = unityType.InvokeMember("FindTypeByPresistentTypeID", BindingFlags.InvokeMethod, null, null, new object[] { classId });
    if (classObject == null)
    {
        return string.Empty;
    }

    var nameProperty = classObject.GetType().GetProperty("name");
    return nameProperty == null ? string.Empty : (string)nameProperty.GetValue(classObject);
}