code: function eachOfLimit(coll, limit, iteratee, callback) {
      return _eachOfLimit(limit)(coll, wrapAsync(iteratee), callback);
  }
docs: The same as [`eachOf`]{@link module:Collections.eachOf} but runs a maximum of `limit` async operations at a
  time.
  
  @name eachOfLimit
  @static
  @memberOf module:Collections
  @method
  @see [async.eachOf]{@link module:Collections.eachOf}
  @alias forEachOfLimit
  @category Collection
  @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
  @param {number} limit - The maximum number of async operations at a time.
  @param {AsyncFunction} iteratee - An async function to apply to each
  item in `coll`. The `key` is the item's key, or index in the case of an
  array.
  Invoked with (item, key, callback).
  @param {Function} [callback] - A callback which is called when all
  `iteratee` functions have finished, or an error occurs. Invoked with (err).
  @returns {Promise} a promise, if a callback is omitted