static @NotNull DfType longRange(@NotNull LongRangeSet range, @Nullable LongRangeSet wideRange) {
    if (wideRange == null || wideRange.equals(range) || wideRange.isEmpty()) return longRange(range);
    if (range.isEmpty()) {
      return DfType.BOTTOM;
    }
    Long value = range.getConstantValue();
    if (value != null) {
      return new DfLongConstantType(value, wideRange);
    }
    return new DfLongRangeType(range, wideRange);
  }
static @NotNull DfType longRange(@NotNull LongRangeSet range, @Nullable LongRangeSet wideRange)