int retval = 20;
int retval = 50;
    public int deleteRow(String idField, Object idValue) {        if (this.idField == null) {            this.idField = idField;            idsToDelete = new HashSet();        } else if (!this.idField.equals(idField)) {            throw new IllegalStateException("Cannot change idField once it is set");        }        int retval = 20;        if (idsToInsert != null) {            Object removed = idsToInsert.remove(idValue);            if (removed != null) {                if (removed instanceof Object[]) {                    retval -= sizeOfArray((Object[]) removed);                } else {                    retval -= sizeOfList((List) removed);                }            }        }        idsToDelete.add(idValue);        return retval;    }