def __init__(self, ixnObj=None, portMgmtObj=None):
        """
        Parameters
            ixnObj: The main ixnObj object
            portMgmtObj: (Optional):  The PortMgmt object.
                         If you already have the portMgmt object, then pass it in. 
                         Otherwise, leave portMgmtObj=None

        Example:
            trafficObj = Traffic(mainObj)
            portMgmtObj = PortMgmt(mainObj)
            captureObj = PacketCapture(mainObj, portMgmtObj)
            captureObj.packetCaptureConfigPortMode(port=[ixChassisIp, '2', '1'], enableControlPlane=False, enableDataPlane=True)
            trafficObj.startTraffic()  <-- Make sure traffic is running in continuous mode
            captureObj.packetCaptureStart()
            time.sleep(10)
            captureObj.packetCaptureStop()
            trafficObj.stopTraffic()

            pktCaptureObj.getCapFile(port=[ixChassisIp, '2', '1'], typeOfCapture='data', saveToTempLocation='c:\\Results',
                                     localLinuxLocation='.', appendToSavedCapturedFile=None)

            pktCaptureObj.packetCaptureGetCurrentPackets(getUpToPacketNumber=5, capturePacketsToFile=True,
                                                         getSavedCapturedDotCapFile=True)

            captureObj.packetCaptureClearTabs()
        """
        self.ixnObj = ixnObj
        if portMgmtObj:
            self.portMgmtObj = portMgmtObj
        else:
            self.portMgmtObj = PortMgmt(ixnObj)

        self.enableControlPlane = False
        self.enableDataPlane = False