docs: def save_to_json(self):
          """The method saves DatasetUpload to json from object"""
          requestvalues = {
              'DatasetId': self.dataset,
              'Name': self.name,
              'Description': self.description,
              'Source': self.source,
              'PubDate': self.publication_date,
              'AccessedOn': self.accessed_on,
              'Url': self.dataset_ref,
              'UploadFormatType': self.upload_format_type,
              'Columns': self.columns,
              'FileProperty': self.file_property.__dict__,
              'FlatDSUpdateOptions': self.flat_ds_update_options,
              'Public': self.public
          }
          return json.dumps(requestvalues)