verificationKey property
The verification-key (a.k.a. public-key) is used to authenticate the digital signatures sent by the Firebase Installation in requests to FIS.
Used for FIS Internal Auth scheme FIS_v1. The public key is expected to be in X.509 format ("SubjectPublicKeyInfo"), compare RFC 5280 (https://tools.ietf.org/html/rfc5280#section-4.1).
Implementation
core.String? verificationKey;