get => GetMetadataValue(MetadataKeys.SourceId, v => new SourceId(v));
set => Add(MetadataKeys.SourceId, value.Value);
private set => AddOrUpdateValue(MetadataKeys.SourceId, value.Value);
get => GetMetadataValue(MetadataKeys.SourceId, v => new SourceId(v));
set => Add(MetadataKeys.SourceId, value.Value);
private set => AddOrUpdateValue(MetadataKeys.SourceId, value.Value);