Mapping Hardware Channel IDs to MATLAB Indices

So the problem lies in converting a code from version 2105b to 2018b . I need to migrate these two lines of code from 2015 to 2018

HWInfo = daqhwinfo(analoginput(handles.DeviceName,handles.DeviceID));
DifferentialChannels = HWInfo.DifferentialIDs;

for the analoginput and daqhwinfo i have used the following lines of codes

HWInfo = daq.getDevices();
s = daq.createSession('ni');
addAnalogInputChannel(s,'Devq',1,'Volatge');

But i have no idea how to implement

HWInfo.DifferentialIDs

in Matlab 2018b. After searching a lot about "HWInfo.DifferentialIDs " all i know is that it maps hardware channel IDs to matlab indices .

Please help me witha a command to do this in matlab 2018b.

Thank you.