How do I get and map organization in OAuth2 generic provider?

OAuth2 generic is fetching user's email only from provider.

How do I get user's organization(s) from the generic OAuth2 provider? How do I map provider's organization to chronograf's organization?

Judging from this doc https://docs.influxdata.com/chronograf/v1.8/administration/managing-organizations/#mapping-organizations I suspect it's not possible with chronograf. Is this indeed the case?

Start with the linked Chronograf organization-mapping documentation and review how the generic OAuth2 provider handles user identity. Determine whether provider organizations can be retrieved and mapped to Chronograf organizations; done means documenting the supported behavior or defining the required feature scope.

Written by the indexing model from the issue text.