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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 title(self):
 """ Title of the object. This schema element is purely informative. """

        value = self._schema.get("title", None)
        if value is None:
            return
        if not isinstance(value, basestring):
            raise SchemaError(
                "title value {0!r} is not a string".format(value))
        return value