Firebase Docs Reference FirebaseInvites Framework Reference Type-Definitions The following type definitions are available globally. FIRInvitesUniversalLinkHandler The definition of the block used by |handleUniversalLink:completion:| Declaration Objective-C typedef void (^FIRInvitesUniversalLinkHandler)(FIRReceivedInvite *_Nullable, NSError *_Nullable) Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated June 20, 2018.