isExternal property
@brief graph vertex can be used to communicate with external graphs or not.
Dart code snippet: @snippet location_manager_example.dart dart_GraphVertex_getIsExternal
Implementation
bool get isExternal {
    final _getFfi = __lib.catchArgumentError(() => __lib.nativeLibrary.lookupFunction<
        Uint8 Function(Pointer<Void>),
        int Function(Pointer<Void>)
      >('navigine_sdk_flutter_GraphVertex_isExternal_get'));
    final _handle = this.handle;
    final _isExternalHandle = _getFfi(_handle);
    final _result = navigine_sdk_flutter_bool_FromFfi(_isExternalHandle);
    navigine_sdk_flutter_bool_ReleaseFfiHandle(_isExternalHandle);
    return _result;
}