@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    DfFloatRangeType type = (DfFloatRangeType)o;
    return Float.compare(type.myFrom, myFrom) == 0 &&
           Float.compare(type.myTo, myTo) == 0 &&
           myInvert == type.myInvert &&
           myNaN == type.myNaN;
  }
@Override
  public boolean equals(Object o)