CredentialPresentmentSet
data class CredentialPresentmentSet(val optional: Boolean, val options: List<CredentialPresentmentSetOption>)
A set of credentials that can be presented together.
If optional is false the application must present the credentials in exactly one of the elements in the options list. All members in an option must be presented.
If options has more than one element an application would typically present these in an user interface for the user to select.