code: public static StringBuffer appendComment(StringBuffer buffer, String comment)
  	{
  		StringBuffer _buffer = initStringBufferIfNecessary(buffer);
  		return doAppendComment(_buffer, comment);
  	}
docs: Add a comment to a StringBuffer.
  
  If the buffer is null, a new one is created.
  
  @param buffer
  StringBuffer to fill
  @param comment
  the comment
  @return the buffer