code: @Help(help = "Switch to standby")
    public void switchToStandby(
        final String idNsr,
        final String idVnfr,
        final String idVdu,
        final String idVnfc,
        final VNFCInstance failedVnfcInstance)
        throws SDKException {
      String url =
          idNsr
              + "/vnfrecords/"
              + idVnfr
              + "/vdunits/"
              + idVdu
              + "/vnfcinstances/"
              + idVnfc
              + "/switchtostandby";
      requestPost(url, failedVnfcInstance);
    }
docs: Make a VNFCInstance switch into standby mode.
  
  @param idNsr the ID of the NetworkServiceRecord containing the VNFCInstance
  @param idVnfr the ID of the VirtualNetworkFunctionRecord containing the VNFCInstance
  @param idVdu the ID of the VirtualDeploymentUnit containing the VNFCInstance
  @param idVnfc the ID on the VNFCInstance that shall switch into standby mode
  @param failedVnfcInstance the failed VNFCInstance
  @throws SDKException if the request fails