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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 visit_UnaryOp(self, node: AST, dfltChaining: bool = True) -> str: """Return representation of `node`s operator and operand."""

        op = node.op
        with self.op_man(op):
            return self.visit(op) + self.visit(node.operand)