class_docstr: Class to output debugging information for cygdb
  
  It writes debug information to cython_debug/cython_debug_info_<modulename>
  in the build directory.
code: def serialize(self):
      self.tb.end("Module")
      self.tb.end("cython_debug")
      xml_root_element = self.tb.close()
  
      try:
          os.makedirs(self.output_dir)
      except OSError as e:
          if e.errno != errno.EEXIST:
              raise
  
      et = etree.ElementTree(xml_root_element)
      kw = {}
      if have_lxml:
          kw["pretty_print"] = True
  
      fn = "cython_debug_info_" + self.module_name
      et.write(
          os.path.join(self.output_dir, fn), encoding="UTF-8", **kw
      )
  
      interpreter_path = os.path.join(self.output_dir, "interpreter")
      with open(interpreter_path, "w") as f:
          f.write(sys.executable)
  
file_path: catboost/contrib/tools/cython/Cython/Debugger/DebugWriter.py
imports: from __future__ import absolute_import
  import os
  import sys
  import errno
  from ..Compiler import Errors
label_desc: Use image node_id 5 for calling the CythonDebugWriter obj's underlying member method code with example usage: obj.serialize() without return types