SAML Additional Attributes

I am wondering if there is a way to get the user_saml app to add additional info via additional attributes included in the saml ā€˜AttributeStatementā€™. Currently, I just get the userā€™s UID and that becomes autoprovisioned as the username. My SAML provider also includes additional fields such as email, firstname, lastname, etc. Can these be mapped to the user? Below is an example of the fields Iā€™m receiving:

            <ns2:Attribute Name="UID" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified">
            <ns2:Attribute Name="FIRSTNAME" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified">
            <ns2:Attribute Name="LASTNAME" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified">

Will mostly be possible with Nextcloud 12.