SH::DiskOutputXRD Node1 SH::DiskOutputXRD - m_prefix + testInvariant() + DiskOutputXRD() + DiskOutputXRD() # doMakeWriter() # getTargetURL() - ClassDef() Node2 SH::DiskOutput + testInvariant() + DiskOutput() + makeWriter() + targetURL() # doMakeWriter() # getTargetURL() # ClassDef() Node2->Node1 Node3 TObject Node3->Node2