@Nullable
  public static List<RegionInfo> getMergeRegions(Cell[] cells) {
    Map<String, RegionInfo> mergeRegionsWithName = getMergeRegionsWithName(cells);
    return (mergeRegionsWithName == null) ? null : new ArrayList<>(mergeRegionsWithName.values());
  }
Returns Deserialized regioninfo values taken from column values that match the regex
'info:merge.*' in array of <code>cells</code>.
hbase-client/src/main/java/org/apache/hadoop/hbase/CatalogFamilyFormat.java