fromJson static method
Decodes a Hello.
Implementation
static Hello fromJson(int? channel, Map<String, dynamic> d) => Hello(
role: Json.requireString(d, 'role'),
protocolVersion: Json.requireInt(d, 'protocolVersion'),
minVersion: Json.optInt(d, 'minVersion', 1)!,
nonce: Json.optString(d, 'nonce'),
info: d['info'] is Map
? (d['info'] as Map).cast<String, dynamic>()
: const {},
);