svoid copyConceptsFile(S dbID1, S dbID2) {
  for (S ending : ll("", ".gz")) {
    File f1 = getProgramFile(dbID1, "concepts.structure" + ending);
    File f2 = getProgramFile(dbID2, "concepts.structure" + ending);
    if (!f2.exists() && f1.exists())
      copyFile(f1, f2);
  }
}

static File copyConceptsFile(S dbID, File dest) {
  ret copyFile(conceptsFile(dbID), dest);
}