public async Task Handle(RebuildCapabilityStatement notification, CancellationToken cancellationToken)
        {
            await _metadataSemaphore.WaitAsync(cancellationToken);

            try
            {
                if (_builder != null)
                {
                    switch (notification.Part)
                    {
                    case RebuildPart.SearchParameter:
                        // Update search params;
                        _builder.SyncSearchParameters();
                        break;

                    case RebuildPart.Profiles:
                        // Update supported profiles;
                        _builder.SyncProfiles(true);
                        break;
                    }
                }

                _metadata = null;
            }
            finally
            {
                _metadataSemaphore.Release();
            }
        }