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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 names(self):
 """Return a list of the names referenced by this binding."""

        names = []
        if isinstance(self.source, ast.List):
            for node in self.source.elts:
                if isinstance(node, ast.Str):
                    names.append(node.s)
        return names