void startCaptureNetworkDump(String localFilePath)
Start/Stop capture of device network traffic for a cloud device.
The capture will start when startCaptureNetworkDump is executed.
The capture will stop at the end of the test run or when stopCaptureNetworkDump is executed.
localFilePath: Full path of the requested file download destination.
In the following example, we will start the capture, wait for 5 seconds and stop.