public void clear() {
super.clear();
final int[] keys = this._set;
final Object[] vals = this._values;
final byte[] states = this._states;
Arrays.fill(this._set, 0, this._set.length, 0);
Arrays.fill(this._values, 0, this._values.length, null);
Arrays.fill(this._states, 0, this._states.length, (byte) 0);
}
protected void removeAt(final int index) {
this._values[index] = null;
super.removeAt(index);
}