GrpcError.unavailable constructor
const
GrpcError.unavailable([
The service is currently unavailable. This is a most likely a transient condition and may be corrected by retrying with a backoff.
See litmus test above for deciding between failedPrecondition, aborted, and unavailable.
Implementation
const GrpcError.unavailable([this.message, this.details, this.rawResponse])
: trailers = const {},
code = StatusCode.unavailable;