<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def save_data(self):
 """Store data as a JSON dump."""

        filename = os.path.join(
            self._get_prefix(),
            self.model.site
        )
        self.store.store_json(
            filename,
            self.model.get_dict()
        )