private static StripeInformationProvider createStripesWithSizes(int l0Count, long l0Size,
    Long[]... sizes) throws Exception {
    ArrayList<List<Long>> sizeList = new ArrayList<>(sizes.length);
    for (Long[] size : sizes) {
      sizeList.add(Arrays.asList(size));
    }
    return createStripesWithSizes(l0Count, l0Size, sizeList);
  }
@param l0Count Number of L0 files.
@param l0Size  Size of each file.
@param sizes   Sizes of the files; each sub-array representing a stripe.
@return Mock stripes.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/compactions/TestStripeCompactionPolicy.java