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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _init_notes(self):
 """Set up the UserNotes page with the initial JSON schema."""

        self.cached_json = {
            'ver': self.schema,
            'users': {},
            'constants': {
                'users': [x.name for x in self.subreddit.moderator()],
                'warnings': Note.warnings
            }
        }

        self.set_json('Initializing JSON via puni', True)