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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 trace_decorator(self):
 """Decorator to trace a function."""


        def decorator(func):

            def wrapper(*args, **kwargs):
                self.tracer.start_span(name=func.__name__)
                return_value = func(*args, **kwargs)
                self.tracer.end_span()
                return return_value

            return wrapper

        return decorator