Version: 2018.1
public static bool IsNativeAsset (Object obj);
public static bool IsNativeAsset (int instanceID);

説明

アセットがネイティブアセットであるかどうかを判断します。

A native Asset is a file produced directly by Unity's serialization system (for example, a .mat Material file is a native Asset)

See Also: AssetDatabase.IsForeignAsset