def document(self, document_id, **kwargs):
baseuri = '<STR_LIT>'.format(self._DOCUMENT_URI,<EOL>document_id)<EOL>res = self.session.get(baseuri, params=kwargs)<EOL>self.handle_http_error(res)<EOL>return res<EOL>
Requests for a document by the document id.
           Normally the response.content can be saved as a pdf file

        Args:
           document_id (str): The id of the document retrieved.
           kwargs (dict): additional keywords passed into
            requests.session.get *params* keyword.