providerId property
The provider ID of the IdP for the user to sign in with.
This should be a provider ID enabled for sign-in, which is either from the
list of
default supported IdPs,
or of the format oidc.* or saml.*. Some examples are google.com,
facebook.com, oidc.testapp, and saml.testapp. At least one of the
fields identifier and provider_id must be set.
Implementation
core.String? providerId;