code: def _parse_docstring(self, docstring):
          
          match = re.match(r"""
              # Following PEP 257
              \s* (?P<summary>[^\n]+?) \s*   # First line
  
              (                              # Description and YAML are optional
                (\n \s*){2}                  # Blank line
  
                # Description (optional)
                (
                  (?!-{3,})                     # Don't use YAML as description
                  \s* (?P<description>.+?) \s*  # Third line and maybe others
                  (?=-{3,})?                    # Stop if "---" is found
                )?
  
                # YAML spec (optional) **currently not used**
                (
                  -{3,}\n                       # "---" begins yaml spec
                  (?P<open_api>.+)
                )?
              )?
              $""", docstring, re.VERBOSE | re.DOTALL)
  
          summary = 'TODO write the summary.'
          description = 'TODO write/remove the description'
          if match:
              m_dict = match.groupdict()
              summary = m_dict['summary']
              if m_dict['description']:
                  description = re.sub(r'(\s|\n){2,}', ' ',
                                       m_dict['description'])
          self._summary = summary
          self._description = description
docs: Parse the method docstring.