private static StripeInformationProvider createStripesL0Only(int l0Count, long l0Size)
    throws Exception {
    List<Long> l0Sizes = new ArrayList<>();
    for (int i = 0; i < l0Count; ++i) {
      l0Sizes.add(l0Size);
    }
    return createStripes(null, new ArrayList<>(), l0Sizes);
  }
@param l0Count Number of L0 files.
@param l0Size  Size of each file.
@return Mock stripes.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/compactions/TestStripeCompactionPolicy.java