public long getLastNBytes() {
    throw new UnsupportedOperationException("Cannot get last N bytes for range type: " + getType());
  }
@return The number of bytes to read from the end of the object.
@throws UnsupportedOperationException if the range is not of the type {@link ByteRangeType#LAST_N_BYTES})
ambry-api/src/main/java/com/github/ambry/router/ByteRange.java