BlobAccountSasPermissions
 BlobAccountSasPermissions contains the list of
            permissions that can be set for a blob account's access policy.  Use
             SetPermissions
            to set the permissions on the  BlobSasBuilder.
            
                using System;
namespace Azure.Storage.Sas
{
    [Flags]
    public enum BlobAccountSasPermissions
    {
        Read = 1,
        Add = 2,
        Create = 4,
        Write = 8,
        Delete = 16,
        List = 32,
        All = -1
    }
}