srecord noeq G22MeshMapping(G22Mesh mesh1, G22Mesh mesh2) {
  delegate Anchor, Curve to G22Mesh.
  
  // For both maps: keys are from mesh1, values are from mesh2
  new BijectiveMap<Anchor> anchorMap;
  new BijectiveMap<Curve> curveMap;
  
  // A mapping is complete iff all anchors and curves from both
  // meshes are covered.
  
  bool isComplete() {
    ret allEq(l(anchorMap), l(mesh1.anchors()), l(mesh2.anchors())
      allEq(l(curveMap), l(mesh1.curves(), l(mesh2.curves()));
  }
  
  // A mapping is valid if the anchorMap and curveMap fit each other
  bool isCompatible() {
    for (curve1, curve2 : curveMap.forwardMap())
    ret isCom    for (anchorMap)
  }
}