} else {
                            bw.write(line);
                        }
                    }
                    bw.write("\n");
                }
                bw.flush();
            } catch (IOException e) {
                throw new IORuntimeException(e);
            }
        }).execute()) {
            if (logger.isDebugEnabled()) {

                }
            }
            return null;
        }

        @Override
        public void close() {
            try {
                writer.flush();
            } catch (final IOException e) {
                // ignore
            }
            CloseableUtil.closeQuietly(writer);

            if (isCommit) {
                try {

                        list.add(StringUtil.EMPTY);
                    } else {
                        list.add(value.toString());
                    }
                }
            });

            csvWriter.flush();
        } catch (final IOException e) {
            logger.warn("Failed to write a sugget elevate word.", e);
        }
    }

    static String getValue(final List<String> list, final int index) {

                }
            }
            return null;
        }

        @Override
        public void close() {
            try {
                writer.flush();
            } catch (final IOException e) {
                // ignore
            }
            CloseableUtil.closeQuietly(writer);

            if (isCommit) {
                try {

                }
            }
            return null;
        }

        @Override
        public void close() {
            try {
                writer.flush();
            } catch (final IOException e) {
                // ignore
            }
            CloseableUtil.closeQuietly(writer);

            if (isCommit) {
                try {

                if (response.getHttpStatusCode() == 200) {
                    logger.info("Flushed config files.");
                } else {
                    logger.warn("Failed to flush config files.");
                }
            } catch (final Exception e) {
                logger.warn("Failed to flush config files.", e);
            }

                    } else {
                        list.add(value.toString());
                    }
                }
            });
            csvWriter.flush();
        } catch (final IOException e) {
            logger.warn("Failed to write a crawling session info.", e);
        }
    }

    public void deleteBefore(final long date) {