Decorating only a subset of vertices is a problem?

Hello @jburzyns,

maybe it is a problem, maybe not...

Here you are skipping some vertices

https://gitlab.cern.ch/jburzyns/vertexdumper/-/blob/main/VertexDumper/src/VertexDecoratorAlg.cxx#L63

which means that some vertices are decorated, other not. In the past I had a problem with this approach when writing, maybe not here.