cdm/src/main/java/ucar/nc2/ft/fmrc/GridDatasetInv.java
private VertCoord getVertCoordinate(int wantId) {
    if (wantId < 0) return null;
    for (VertCoord vc : vaxes) {
      if (vc.getId() == wantId)
        return vc;
    }
    return null;
  }
private VertCoord getVertCoordinate(int wantId) {
    if (wantId < 0) return null;
    for (VertCoord vc : vaxes) {
      if (vc.getId() == wantId)
        return vc;
    }
    return null;
  }
////////////////////////////////////////////////////