def save_to_json(self):
requestvalues = {<EOL>'<STR_LIT:id>': self.dataset,<EOL>'<STR_LIT>': self.publication_date.strftime('<STR_LIT>'),<EOL>'<STR_LIT:source>': self.source,<EOL>'<STR_LIT>': self.refernce_url,<EOL>}        <EOL>return json.dumps(requestvalues)<EOL>
The method saves data to json from object