def getConfigElementObj(self, trafficItemObj=None, trafficItemName=None, endpointSetName=None):
        """
        Description
           Get the config element object handle.

           Use case #1: trafficItemName + endpointSetName
           Use case #2: trafficItemObj + endpointSetName

           Use case #3: trafficItemName only (Will assume there is only one configElement object which will be returned)
           Use case #4: trafficItemObj only  (Will assume there is only one configElement object which will be returned)

        Parameters
             
           trafficItemObj: <str obj>: The Traffic Item object.
           trafficItemName: <str>: The Traffic Item name.
           endpointSetName: <str>: The Traffic Item's EndpointSet name.

           How this works:
               - Users could create multiple EndpointSets within a Traffic Item.
               - Each EndpointSet has a unique object ID by default.
               - For each EndpointSet is created, a config element object is also created.
               - Each config element object handle is associated with an EndpointSet ID.
               - To be able to get the right config element object handle, we need to query
                 for the EndpointSet that you need for modifying.
               - Another terminology for EndpointSet is FlowGroup.
               - If you have multiple EndpointSets, you should give each EndpointSet a name
                 to make querying possible.
               - Otherwise, this function will assume there is only one EndpointSet created which will be returned.

        Usage examples:
           trafficObj.getConfigElementObj(trafficItemName='Raw MPLS/UDP', endpointSetName='EndpointSet-2')

           trafficObj.getConfigElementObj(trafficItemName='Raw MPLS/UDP', endpointSetName=None)

           trafficObj.getConfigElementObj(trafficItemObj='/api/v1/sessions/1/ixnetwork/traffic/trafficItem/1', 
                                          trafficItemName=None, endpointSetName=None)

           trafficObj.getConfigElementObj(trafficItemObj='/api/v1/sessions/1/ixnetwork/traffic/trafficItem/1', 
                                          trafficItemName=None, endpointSetName='EndpointSet-2')

        Return
           configElement: /api/v1/sessions/{id}/ixnetwork/traffic/trafficItem/{id}/configElement/{id}
        """
        if trafficItemObj:
            trafficItemName = self.getTrafficItemName(trafficItemObj)

        if trafficItemName:
            if endpointSetName:
                queryData = {'from': '/traffic',
                             'nodes': [{'node': 'trafficItem', 'properties': ['name'],
                                        'where': [{'property': 'name', 'regex': trafficItemName}]},
                                       {'node': 'endpointSet', 'properties': ['name'],
                                        'where': [{'property': 'name', 'regex': endpointSetName}]},
                      ]}

            if endpointSetName == None:
                queryData = {'from': '/traffic',
                             'nodes': [{'node': 'trafficItem', 'properties': ['name'],
                                        'where': [{'property': 'name', 'regex': trafficItemName}]},
                                       {'node': 'endpointSet', 'properties': [],
                                        'where': []},
                      ]}

            queryResponse = self.ixnObj.query(data=queryData)

            trafficItemList = queryResponse.json()['result'][0]['trafficItem']
            if trafficItemList == []:
                raise IxNetRestApiException('\nError: No traffic item name found: {0}'.format(trafficItemName))

            endpointSetList = queryResponse.json()['result'][0]['trafficItem'][0]['endpointSet']
            if endpointSetList == []:
                raise IxNetRestApiException('\nError: No endpointSet name: {0} found in Traffic Item name: {1}'.format(
                    endpointSetName, trafficItemName))

            endpointSetObj = queryResponse.json()['result'][0]['trafficItem'][0]['endpointSet'][0]['href']
            endpointSetId = endpointSetObj.split('/')[-1]

            # With the traffic item name and endpointSetId, get the Traffic Item's config element object handle.
            queryData = {'from': '/traffic',
                         'nodes': [{'node': 'trafficItem', 'properties': ['name'],
                                    'where': [{'property': 'name', 'regex': trafficItemName}]},
                                   {'node': 'configElement', 'properties': ['endpointSetId'],
                                    'where': [{'property': 'endpointSetId', 'regex': endpointSetId}]}
                  ]}

            queryResponse = self.ixnObj.query(data=queryData)
            configElementObj = queryResponse.json()['result'][0]['trafficItem'][0]['configElement'][0]['href']
            print(configElementObj)
            return configElementObj