@Test
public void testAllRowSet2() {

  RowSet in =
      RowSet.newBuilder()
          .addRowRanges(
              RowRange.newBuilder()
                  .setStartKeyClosed(ByteString.EMPTY)
                  .setEndKeyOpen(ByteString.EMPTY))
          .build();
  RangeSet<RowKeyWrapper> out = adapter.rowSetToRangeSet(in);
  RangeSet<RowKeyWrapper> expected =
      ImmutableRangeSet.<RowKeyWrapper>builder().add(Range.<RowKeyWrapper>all()).build();
  assertEquals(expected, out);
  // NOTE: this isn't symmetrical, ['','') is converted to its canonical form of unset bounds
}