public abstract long getFirstDataPageOffset();
@Test
  public void testConversionVeryBig() {
    long veryBig = (long) Integer.MAX_VALUE * 3;

    ColumnChunkMetaData md = newMD(veryBig);
    assertTrue(md instanceof LongColumnChunkMetaData);
    assertEquals(veryBig, md.getFirstDataPageOffset());
  }