code: def plistfilename(self):
          '''
          This is a lazily detected absolute filename of the corresponding
          property list file (*.plist). None if it doesn't exist.
          '''
          if self._plist_fname is None:
              self._plist_fname = discover_filename(self.label)
          return self._plist_fnamf plistfilename(self):
          '''
          This is a lazily detected absolute filename of the corresponding
          property list file (*.plist). None if it doesn't exist.
          '''
          if self._plist_fname is None:
              self._plist_fname = discover_filename(self.label)
          return self._plist_fname
docs: This is a lazily detected absolute filename of the corresponding
          property list file (*.plist). None if it doesn't exist.