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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 create_tag(self, name, description=None, servers=[]):
 """ Create a new Tag. Only name is mandatory. Returns the created Tag object. """

        servers = [str(server) for server in servers]
        body = {'tag': Tag(name, description, servers).to_dict()}
        res = self.request('POST', '/tag', body)

        return Tag(cloud_manager=self, **res['tag'])