let {nextLevel} = obj

let nextLevel = obj.nextLevel;

const goingDeep = (obj) => {
    if (obj.hasOwnProperty('container4'){
        obj.container4 = 'found'
        return obj
    } else {
        return obj.getOwnPropertyName.reduce((prop, result) => result || goingDeep(obj[prop]), null);
    }
}