AccountSasPermissions
 AccountSasPermissions contains the list of
            permissions that can be set for a blob's access policy.  Use
             SetPermissions
            to set the permissions on the  AccountSasBuilder.
            
                using System;
namespace Azure.Storage.Sas
{
    [Flags]
    public enum AccountSasPermissions
    {
        Read = 1,
        Write = 2,
        Delete = 4,
        List = 8,
        Add = 16,
        Create = 32,
        Update = 64,
        Process = 128,
        Tag = 256,
        Filter = 512,
        DeleteVersion = 1024,
        SetImmutabilityPolicy = 2048,
        PermanentDelete = 4096,
        All = -1
    }
}