docs: def process_docstring(app, what, name, obj, options, lines):
      """Process the docstring for a given python object.
  
      Called when autodoc has read and processed a docstring. `lines` is a list
      of docstring lines that `_process_docstring` modifies in place to change
      what Sphinx outputs.
  
      The following settings in conf.py control what styles of docstrings will
      be parsed:
  
      * ``napoleon_google_docstring`` -- parse Google style docstrings
      * ``napoleon_numpy_docstring`` -- parse NumPy style docstrings
  
      Parameters
      ----------
      app : sphinx.application.Sphinx
          Application object representing the Sphinx process.
      what : str
          A string specifying the type of the object to which the docstring
          belongs. Valid values: "module", "class", "exception", "function",
          "method", "attribute".
      name : str
          The fully qualified name of the object.
      obj : module, class, exception, function, method, or attribute
          The object to which the docstring belongs.
      options : sphinx.ext.autodoc.Options
          The options given to the directive: an object with attributes
          inherited_members, undoc_members, show_inheritance and noindex that
          are True if the flag option of same name was given to the auto
          directive.
      lines : list of str
          The lines of the docstring, see above.
  
          .. note:: `lines` is modified *in place*
  
      Notes
      -----
      This function is (to most parts) taken from the :mod:`sphinx.ext.napoleon`
      module, sphinx version 1.3.1, and adapted to the classes defined here"""
      result_lines = lines
      if app.config.napoleon_numpy_docstring:
          docstring = ExtendedNumpyDocstring(
              result_lines, app.config, app, what, name, obj, options)
          result_lines = docstring.lines()
      if app.config.napoleon_google_docstring:
          docstring = ExtendedGoogleDocstring(
              result_lines, app.config, app, what, name, obj, options)
          result_lines = docstring.lines()
  
      lines[:] = result_lines[:]