} catch (BTreeException e) { LOG.warn("start() - " + "error while removing doc", e); } catch (IOException e) { LOG.warn("start() - " + "error while removing doc", e); } catch (TerminatedException e) { LOG.warn("method terminated", e);
                public Object start() {                    try {                        domDb.remove(transaction, idx, null);                        domDb.flush();                    } catch (BTreeException e) {                        LOG.warn("start() - " + "error while removing doc", e);                    } catch (IOException e) {                        LOG.warn("start() - " + "error while removing doc", e);                    } catch (TerminatedException e) {                        LOG.warn("method terminated", e);                    } catch (DBException e) {                        LOG.warn("start() - " + "error while removing doc", e);                    }                    return null;                }