clone method

Implementation

@override
ApbInterface clone() => ApbInterface(
      addrWidth: addrWidth,
      dataWidth: dataWidth,
      userReqWidth: userReqWidth,
      userDataWidth: userDataWidth,
      userRespWidth: userRespWidth,
      includeSlvErr: includeSlvErr,
      includeWakeup: includeWakeup,
      numSelects: numSelects,
    );