How to access device info via custom script?

if (!window.customScriptAPI ||
                !window.customScriptAPI.clientInterface ||
                !window.customScriptAPI.clientInterface.hasFeature('getDeviceTags')) 

{                 *return*; }
let deviceTagsJson = await window.customScriptAPI.clientInterface.callFeature('getDeviceTags', [], true);
let deviceTags;
if (deviceTagsJson) 

{     deviceTags = JSON.parse(deviceTagsJson);     deviceTags = deviceTags.map(tag=> tag.toLowerCase()); }