internal static UInt64 GetOrGenerateFileIDHint(UnityEngine.Object obj)
{
UInt64 fileID = Unsupported.GetFileIDHint(obj);
if (fileID == 0)
{
// GenerateFileIDHint only work on saved nested prefabs instances.
var instanceHandle = PrefabUtility.GetPrefabInstanceHandle(obj);
if (instanceHandle != null)
{
bool isPrefabInstanceSaved = Unsupported.GetFileIDHint(instanceHandle) != 0;
if (isPrefabInstanceSaved && PrefabUtility.IsPartOfNonAssetPrefabInstance(obj) && PrefabUtility.GetPrefabAssetType(obj) != PrefabAssetType.MissingAsset)
{
fileID = Unsupported.GenerateFileIDHint(obj);
}
}
}
return(fileID);
}