def getProtocolObjFromProtocolList(self, protocolList, protocol, deviceGroupName=None):
        """
        Description
           This is an internal API used after calling self.getProtocolListByPortNgpf().
           self.getProtocolListByPortNgpf() returns a dict containing a key called deviceGroup
           that contains all the device group protocols in a list.

           Use this API to get the protocol object handle by passing in the deviceGroup list and
           specify the NGPF protocol endpoint name.

        Parameters
           protocolList: <list>:
           protocol: <str>: The NGPF endpoint protocol name. View below:
           deviceGroupName: <str>: If there are multiple Device Groups within the Topology, filter
                            the Device Group by its name.

         NGPF endpoint protocol names:
            'ancp', 'bfdv4Interface', 'bgpIpv4Peer', 'bgpIpv6Peer', 'dhcpv4relayAgent', 'dhcpv6relayAgent',
            'dhcpv4server', 'dhcpv6server', 'geneve', 'greoipv4', 'greoipv6', 'igmpHost', 'igmpQuerier',
            'lac', 'ldpBasicRouter', 'ldpBasicRouterV6', 'ldpConnectedInterface', 'ldpv6ConnectedInterface',
            'ldpTargetedRouter', 'ldpTargetedRouterV6', 'lns', 'mldHost', 'mldQuerier', 'ptp',
            'ipv6sr', 'openFlowController', 'openFlowSwitch', 'ospfv2', 'ospfv3',  'ovsdbcontroller',
            'ovsdbserver', 'pcc', 'pce', 'pcepBackupPCEs', 'pimV4Interface', 'pimV6Interface', 'ptp',
            'rsvpteIf', 'rsvpteLsps', 'tag', 'vxlan'

        Example usage:
            protocolObj = Protocol(mainObj)
            protocolList = protocolObj.getProtocolListByPortNgpf(port=['192.168.70.120', '1', '2'])
            obj = protocolObj.getProtocolObjFromProtocolList(protocolList['deviceGroup'], 'bgpIpv4Peer')

            If you expect multiple Device Groups in your Topology, you could filter by the Device Group name:
            obj = protocolObj.getProtocolObjFromProtocolList(protocolList['deviceGroup'], 'ethernet', deviceGroupName='DG2')

        Returns
            The protocol object handle in a list. For example:
            ['/api/v1/sessions/1/ixnetwork/topology/2/deviceGroup/2/ethernet/1/ipv4/1/bgpIpv4Peer']
        """
        self.ixnObj.logInfo('\n{0}...'.format('\ngetProtocolObjFromProtocolList'), timestamp=False)
        protocolObjectHandleList = []

        for protocols in protocolList:
            if protocol in ['deviceGroup', 'ethernet', 'ipv4', 'ipv6']:
                for endpointObj in protocols:
                    if protocol == 'deviceGroup':
                        # Include the deviceGroup object handle also
                        match = re.search(
                            r'(/api/v1/sessions/[0-9]+/ixnetwork/topology/[0-9]+/deviceGroup/[0-9]+)$', endpointObj)

                        if match:
                            # A topology could have multiple Device Groups. Filter by the Device Group name.
                            if deviceGroupName:
                                deviceGroupObj = match.group(1)
                                response = self.ixnObj.get(self.ixnObj.httpHeader + deviceGroupObj, silentMode=True)
                                if deviceGroupName == response.json()['name']:
                                    self.ixnObj.logInfo(str([endpointObj]), timestamp=False)
                                    return [endpointObj]
                            else:
                                protocolObjectHandleList.append(endpointObj)

                    # Search for the protocol after the deviceGroup endpoint.
                    match = re.search(r'(/api/v1/sessions/[0-9]+/ixnetwork/topology/[0-9]+/deviceGroup/[0-9]+).*/%s/[0-9]+$' % protocol, endpointObj)
                    if match:
                        # A topology could have multiple Device Groups. Filter by the Device Group name.
                        if deviceGroupName:
                            deviceGroupObj = match.group(1)
                            response = self.ixnObj.get(self.ixnObj.httpHeader + deviceGroupObj, silentMode=True)
                            if deviceGroupName == response.json()['name']:
                                self.ixnObj.logInfo(str([endpointObj]), timestamp=False)
                                return [endpointObj]
                        else:
                            protocolObjectHandleList.append(endpointObj)
            else:
                if any(protocol in x for x in protocols):
                    index = [index for index, item in enumerate(protocols) if protocol in item]
                    protocolObjectHandle = protocols[index[0]]
                    self.ixnObj.logInfo('Appending protocol: %s' % str([protocolObjectHandle]), timestamp=False)
                    protocolObjectHandleList.append(protocolObjectHandle)

        return protocolObjectHandleList