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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 dict(self):
 """ dictionary representation of the metadata. :return: dictionary representation of the metadata :rtype: dict """

        metadata = {}
        properties = {}
        for name, prop in list(self.properties.items()):
            properties[name] = prop.dict
        metadata['properties'] = properties
        return metadata