TExternalReconciler.FindExisting Method
Resolves the local user for the external identity without creating a new account: first by an existing link (provider/subject), then -- when AllowAutoLinkByEmail is enabled -- by linking an existing user matched by (verified) e-mail. Returns nil when no existing user can be resolved.
Syntax
Unit: Sphinx.ExternalReconciler
function TExternalReconciler.FindExisting: TUser;