code: private static void addTetrahedralConfiguration(ITetrahedralChirality tc, GraphBuilder gb, Map<IAtom, Integer> indices) {
  
          IAtom[] ligands = tc.getLigands();
  
          int u = indices.get(tc.getChiralAtom());
          int vs[] = new int[]{indices.get(ligands[0]), indices.get(ligands[1]), indices.get(ligands[2]),
                  indices.get(ligands[3])};
  
          gb.tetrahedral(u).lookingFrom(vs[0]).neighbors(vs[1], vs[2], vs[3])
                  .winding(tc.getStereo() == CLOCKWISE ? Configuration.CLOCKWISE : Configuration.ANTI_CLOCKWISE).build();
      }
docs: Add tetrahedral stereo configuration to the Beam GraphBuilder.
  
  @param tc      stereo element specifying tetrahedral configuration
  @param gb      the current graph builder
  @param indices atom indices