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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_integration(tracer=None):
 """Trace the Google Cloud Client libraries by integrating with the transport level including HTTP and gRPC. """

    log.info('Integrated module: {}'.format(MODULE_NAME))

    # Integrate with gRPC
    trace_grpc(tracer)

    # Integrate with HTTP
    trace_http(tracer)