realtimeDatabaseInstance property
The default Firebase Realtime Database instance name, in the format:
PROJECT_ID Though rare, your projectId might already be used as the name
for an existing Realtime Database instance in another project (learn more
about
database sharding).
In these cases, your projectId is appended with a hyphen then five
alphanumeric characters to create your default Realtime Database instance
name. For example, if your projectId is myproject123, your default
database instance name might be: myproject123-a5c16
Implementation
core.String? realtimeDatabaseInstance;