whole document covering signature in ValidateSignatureReference

[yoonjong92]

First, Thank you very much for easy and powerful Library :)

I got Saml from Idp which has Signature with
(which means cover the whole document)

So ValidateSignatureReference function throws ArgumentOutOfRangeException.

Can I get help with this?
I can't determine that this situation is wrong from "Saml provided from Idp" or "ValidateSignatureReference's implementation"

Thanks