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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 get_default_mimetype(self):
 		""" Returns the default mimetype """

		mimetype = self.default_mimetype
		if mimetype is None:	# class inherits from module default
			mimetype = DEFAULT_MIMETYPE
		if mimetype is None:	# module is set to None?
			mimetype = 'application/rdf+xml'
		return mimetype