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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 to_swagger(self):
 """ Generate a dictionary for documentation generation. """

        return dict_filter(
            operationId=self.operation_id,
            description=(self.callback.__doc__ or '').strip() or None,
            summary=self.summary or None,
            tags=list(self.tags) or None,
            deprecated=self.deprecated or None,
            consumes=list(self.consumes) or None,
            parameters=[param.to_swagger(self.resource) for param in self.parameters] or None,
            produces=list(self.produces) or None,
            responses=dict(resp.to_swagger(self.resource) for resp in self.responses) or None,
            security=self.security.to_swagger() if self.security else None,
        )