code: def option(self, key, value):
          
          self._jreader = self._jreader.option(key, to_str(value))
          return self
docs: Adds an input option for the underlying data source.
  
          You can set the following option(s) for reading files:
              * ``timeZone``: sets the string that indicates a timezone to be used to parse timestamps
                  in the JSON/CSV datasources or partition values.
                  If it isn't set, it uses the default value, session local timezone.