toJson method
Implementation
Map<String, dynamic> toJson() {
final json = <String, dynamic>{'jsonrpc': jsonrpc};
if (id != null) json['id'] = id;
if (method != null) json['method'] = method!;
if (params != null) json['params'] = params!;
if (result != null) json['result'] = result;
if (error != null) json['error'] = error!;
return json;
}