protected int countRows(Table table) throws IOException {
    return TEST_UTIL.countRows(table);
  }
Initialize the tests with a table filled with some data and two snapshots (snapshotName0,
snapshotName1) of different states. The tableName, snapshotNames and the number of rows in the
snapshot are initialized.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/CloneSnapshotFromClientTestBase.java