class_docstr: Used to decorate file-like objects with a handy 'writeln' method
code: def __init__(self, stream):
      self.stream = stream
  
imports: import unittest
  import doctest
  import sys
  import time
  import timeside.core
label_desc: Use image node_id 1 to create a new _WritelnDecorator object  with example: obj = _WritelnDecorator(stream)