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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 add_curie(self, name, href):
 """Adds a CURIE definition. A CURIE link with the given ``name`` and ``href`` is added to the document. This method returns self, allowing it to be chained with additional method calls. """

        self.draft.set_curie(self, name, href)
        return self