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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 merge(self, other):
 """Merge another ontology into the current one. Raises: TypeError: When argument is not an Ontology object. Example: True False True """

        if not isinstance(other, Ontology):
            raise TypeError("'merge' requires an Ontology as argument,"
                            " not {}".format(type(other)))

        self.terms.update(other.terms)
        self._empty_cache()
        self.adopt()
        self.reference()