protected void emitSet (int index, E newElem, E oldElem) { notify(SET, index, newElem, oldElem); }
protected void emitRemove (int index, E elem) { notify(REMOVE, index, elem, null); }
protected void emitAdd (int index, E elem) { notify(ADD, index, elem, null); }
protected void emitRemove (int index, E elem) { notify(REMOVE, index, elem, null); }
protected void emitAdd (int index, E elem) { notify(ADD, index, elem, null); }
protected void emitSet (int index, E newElem, E oldElem) { notify(SET, index, newElem, oldElem); }