protected void setupObjectList() {
objectList.add(new NumberFixedLength(INDEXED_DATA_START, this, DATA_START_FIELD_SIZE));
objectList.add(new NumberFixedLength(INDEXED_DATA_LENGTH, this, DATA_LENGTH_FIELD_SIZE));
objectList.add(new NumberFixedLength(NUMBER_OF_INDEX_POINTS, this, NO_OF_INDEX_POINTS_FIELD_SIZE));
objectList.add(new NumberFixedLength(BITS_PER_INDEX_POINT, this, BITS_PER_INDEX_POINTS_FIELD_SIZE));
objectList.add(new NumberVariableLength(FRACTION_AT_INDEX, this, FRACTION_AT_INDEX_MINIMUM_FIELD_SIZE));
}