code: function forOwnDeep(object, callback, prefix) {
      prefix = prefix ? prefix + '.' : '';
  
      _.forOwn(object, function(value, key) {
          if (_.isString(value)) {
              callback(value, prefix + key);
          } else {
              forOwnDeep(value, callback, prefix + key);
          }
      });
  }
docs: Utility function for looping deeply over an object's properties
  
  @param object - object to loop over
  @param callback - callback to call for every key-value pair found
  @param prefix - prefix to use for the keys that are returned in the callback