Virtual Geometry Model (VGM) is a geometry conversion tool, actually providing conversion between Geant4 and ROOT TGeo geometry models. Its design allows inclusion of another geometry model by implementing a single sub-module instead of writing bilateral converters for all already supported models.
The reference paper: I. Hrivnacova 2020 EPJ Web of Conferences 245, 02014
Documentation: https://vmc-project.github.io/vgm-documentation/
Reference: https://vmc-project.github.io/vgm/