Group AttributeStatement is incorrectly handled if multiple groups are sent.

[gautamrege]

I have a Okta Application that has some people configured as part of multiple groups. In the SAMLResponse I do see the data: (Groups field has "QA", "Dev" and "Everyone".

Groups: {XMLName:{Space:urn:oasis:names:tc:SAML:2.0:assertion Local:Attribute} FriendlyName: Name:Groups NameFormat:urn:oasis:names:tc:SAML:2.0:attrname-format:basic Values:[{XMLName:{Space:urn:oasis:names:tc:SAML:2.0:assertion Local:AttributeValue} Type: Value:QA} {XMLName:{Space:urn:oasis:names:tc:SAML:2.0:assertion Local:AttributeValue} Type: Value:Everyone} {XMLName:{Space:urn:oasis:names:tc:SAML:2.0:assertion Local:AttributeValue} Type: Value:Dev}]}

However, since the library is treating everything like a key / value strings, only the last group gets attached. i.e. attributeStatement["Groups"] is "QA" (one of them)

This is probably a generic problem for handling attribute Statements where we could expect a list and not just a string.

Solution: We need to support arrays if the attribute statement is a Array. I haven't thought the solution through yet but will give it shot and send a PR :)