clone method

Implementation

@override
Axi4ReadCluster clone() => Axi4ReadCluster(
      idWidth: arIntf.idWidth,
      addrWidth: arIntf.addrWidth,
      lenWidth: arIntf.lenWidth,
      userWidth: arIntf.userWidth,
      useLast: rIntf.useLast,
      useLock: arIntf.useLock,
      dataWidth: rIntf.dataWidth,
    );