StorageSharedKeyCredentialInternals
This class is added to access protected static methods off of the base class
            that should not be exposed directly to customers.
            
                namespace Azure.Storage
{
    internal class StorageSharedKeyCredentialInternals
    {
        private StorageSharedKeyCredentialInternals(string accountName, string accountKey)
            : this(accountName, accountKey)
        {
        }
        internal static string (StorageSharedKeyCredential credential, string message)
        {
            return StorageSharedKeyCredential.ComputeSasSignature(credential, message);
        }
    }
}