code: @Override
      public void setDeviceLink(ConnectionLink next) {
          super.setDeviceLink(next);
          this.deviceServiceContext = (TCPConnectionContext) getDeviceLink().getChannelAccessor();
          this.deviceReadInterface = this.deviceServiceContext.getReadInterface();
          this.deviceWriteInterface = this.deviceServiceContext.getWriteInterface();
      }
docs: /*
  @see com.ibm.wsspi.channelfw.base.OutboundProtocolLink#setDeviceLink(com.ibm.wsspi.channelfw.ConnectionLink)