How to add InclusiveNamespaces in Signature

[lostvicking]

Hello and thank you for maintaining this very useful project! I am using xml-crypto indirectly through a project called smalify. We have a requirement to have an ec:InclusiveNamespaces element in the signature of our SAML Response. I cannot seem to figure out how one adds InclusiceNamespaces to a signature and would be very thankful for some guidance on how to get that right.

<ds:SignedInfo>
<ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
<ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
<ds:Reference URI="#_1e1ed6a7c84fb5787ff829b0ba7a23b4">
<ds:Transforms>
<ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
<ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
<ec:InclusiveNamespaces xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="ds saml xs xsi" />
</ds:Transforms>