@Override
  public byte[] getStartRow() {
    final byte[] startRow = this.delegateScan.getStartRow();
    return Bytes.copy(startRow);
  }
Create Immutable instance of Scan from given Scan object
@param scan Copy all values from Scan
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ImmutableScan.java