grantRole method
Implementation
grantRole(int seqid, TProtocol iprot, TProtocol oprot) async {
grantRole_args args = new grantRole_args();
args.read(iprot);
iprot.readMessageEnd();
grantRole_result result = new grantRole_result();
result.success = await iface_.grantRole(args.req);
oprot.writeMessageBegin(
new TMessage("grantRole", TMessageType.REPLY, seqid));
result.write(oprot);
oprot.writeMessageEnd();
oprot.trans_.flush();
}