public static string GetKey(this Blob document) => (document.FolderName + "/" + document.OwnerId()).KeepReplacing("//", "/").TrimStart("/");
/// <summary>
/// Determines whether this blob is an image.
/// </summary>
public static bool IsImage(this Blob doc)
{
return doc.FileExtension.ToLower().TrimStart(".")
.IsAnyOf("jpg", "jpeg", "png", "bmp", "gif", "webp", "tiff", "svg");
}
