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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 _build_netengine_arguments(self):
 """ returns a python dictionary representing arguments that will be passed to a netengine backend for internal use only """

        arguments = {
            "host": self.host
        }

        if self.config is not None:
            for key, value in self.config.iteritems():
                arguments[key] = value

        if self.port:
            arguments["port"] = self.port

        return arguments