FirebaseAdmin.
This is an abstract class.
Identifies a user to be looked up.
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Last updated 2024-04-04 UTC.
[null,null,["Last updated 2024-04-04 UTC."],[],[],null,["FirebaseAdmin.Auth.UserIdentifier\n\n\n**This is an abstract class.**\n\nIdentifies a user to be looked up.\n\nSummary\n\nInheritanceDirect Known Subclasses:[FirebaseAdmin.Auth.EmailIdentifier](/docs/reference/admin/dotnet/class/firebase-admin/auth/email-identifier), [FirebaseAdmin.Auth.PhoneIdentifier](/docs/reference/admin/dotnet/class/firebase-admin/auth/phone-identifier), [FirebaseAdmin.Auth.ProviderIdentifier](/docs/reference/admin/dotnet/class/firebase-admin/auth/provider-identifier), [FirebaseAdmin.Auth.UidIdentifier](/docs/reference/admin/dotnet/class/firebase-admin/auth/uid-identifier)"]]