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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 _get_vnet(self, adapter_number):
 """ Return the vnet will use in ubridge """

        vnet = "ethernet{}.vnet".format(adapter_number)
        if vnet not in self._vmx_pairs:
            raise VMwareError("vnet {} not in VMX file".format(vnet))
        return vnet