logout method
log out this client
Implementation
Future<bool> logout() {
var tmp0 = 0;
tmp0 = _box.borrow();
final tmp1 = _api._clientLogout(
tmp0,
);
final tmp3 = tmp1;
final ffi.Pointer<ffi.Void> tmp3_0 = ffi.Pointer.fromAddress(tmp3);
final tmp3_1 = _Box(_api, tmp3_0, "__Client_logout_future_drop");
tmp3_1._finalizer = _api._registerFinalizer(tmp3_1);
final tmp2 = _nativeFuture(tmp3_1, _api.__clientLogoutFuturePoll);
return tmp2;
}