code: def filename(self):
          
          # Needs to be done this way to be used by the project config.
          # To fix on a later PR
          self._filename = getattr(self, '_filename', None)
          self._root_path = getattr(self, '_root_path', None)
  
          if self._filename is None and self._root_path is None:
              return self._filename_global()
          else:
              return self._filename_projects()
docs: Defines the name of the configuration file to use.