code: public void writeHeader(BufferedWriter bufferedWriter, boolean appendLineTermination) throws IOException {
  		checkEntityConfig();
  		bufferedWriter.write(buildHeaderLine(appendLineTermination));
  	}
docs: Write the header line to the writer.
  
  @param bufferedWriter
  Where to write our header information.
  @param appendLineTermination
  Set to true to add the newline to the end of the line.
  @throws IOException
  If there are any IO exceptions thrown when writing.