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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 generic_visit(self, node: AST, dfltChaining: bool = True) -> str: """Default handler, called if no explicit visitor function exists for a node. """

        for field, value in ast.iter_fields(node):
            if isinstance(value, list):
                for item in value:
                    if isinstance(item, AST):
                        self.visit(item)
            elif isinstance(value, AST):
                self.visit(value)