### Question:
LDIFWriter implements Closeable { public void writeComment(LocalizableMessage comment, int wrapColumn) throws IOException { ifNull(comment); String[] lines = SPLIT_NEWLINE.split(comment); for (String l : lines) { if (wrapColumn <= 0) { writer.write("# "); writer.write(l); writer.newLine(); } else { int breakColumn = wrapColumn - 2; if (l.length() <= breakColumn) { writer.write("# "); writer.write(l); writer.newLine(); } else { int startPos = 0; outerLoop: while (startPos < l.length()) { if (startPos + breakColumn >= l.length()) { writer.write("# "); writer.write(l.substring(startPos)); writer.newLine(); startPos = l.length(); } else { int endPos = startPos + breakColumn; int i=endPos - 1; while (i > startPos) { if (l.charAt(i) == ' ') { writer.write("# "); writer.write(l.substring(startPos, i)); writer.newLine(); startPos = i+1; continue outerLoop; } i--; } writer.write("# "); writer.write(l.substring(startPos, endPos)); writer.newLine(); startPos = endPos; } } } } } } LDIFWriter(LDIFExportConfig exportConfig); void writeComment(LocalizableMessage comment, int wrapColumn); boolean writeEntries(Collection<Entry> entries); boolean writeEntry(Entry entry); boolean writeTemplateEntry(TemplateEntry templateEntry); void writeChangeRecord(ChangeRecordEntry changeRecord); void writeAddChangeRecord(Entry entry); void writeDeleteChangeRecord(Entry entry, boolean commentEntry); void writeModifyChangeRecord(DN dn, List<Modification> modifications); void writeModifyDNChangeRecord(DN dn, RDN newRDN, boolean deleteOldRDN,
                                        DN newSuperior); void flush(); @Override void close(); static void appendLDIFSeparatorAndValue(StringBuilder buffer,
                                                 ByteSequence valueBytes); static void appendLDIFSeparatorAndValue(StringBuilder buffer,
      ByteSequence valueBytes, boolean isURL, boolean isBase64); static void writeLDIFLine(StringBuilder line, BufferedWriter writer,
                                   boolean wrapLines, int wrapColumn);  }### Answer:
@Test(dataProvider = "writeCommentDataProvider") public void TestWriteComment(String comment, int wrapColumn, String[] expectedLDIF) throws Exception { Writer writer = new Writer(); LDIFWriter ldifWriter = writer.getLDIFWriter(); ldifWriter.writeComment(LocalizableMessage.raw(comment), wrapColumn); checkLDIFOutput(writer, expectedLDIF); }