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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 find_matching_builtin(self, node):
 """ Return matched keyword. If the node alias on a correct keyword (and only it), it matches. """

        for path in EQUIVALENT_ITERATORS.keys():
            correct_alias = {path_to_node(path)}
            if self.aliases[node.func] == correct_alias:
                return path