return (addedInsert ? (removedDelete ? 0 : 16) : 0);
int deltaSize = (addedInsert ? (removedDelete ? 0 : 16) : 0); size += deltaSize; return deltaSize;
    public int addRow(int left, int right) {        Row row = new Row(left, right);        boolean removedDelete = rowsToDelete.remove(row);        boolean addedInsert = rowsToInsert.add(row);        return (addedInsert ? (removedDelete ? 0 : 16) : 0);    }