rpc LeaseGrant (LeaseGrantRequest) returns (LeaseGrantResponse) { }

message LeaseGrantRequest {
    // Advisory time to live in seconds
    int64 TTL = 1;
    int64 ID = 2;
}

message LeaseGrantResponse {
    ResponseHeader header = 1;
    int64 ID = 2;
    int64 TTL = 3;
    string error = 4;
}