code: function eachLimit(coll, limit, iteratee, callback) {
      return eachOfLimit(limit)(coll, withoutIndex(wrapAsync(iteratee)), callback);
  }
docs: The same as [`each`]{@link module:Collections.each} but runs a maximum of `limit` async operations at a time.
  
  @name eachLimit
  @static
  @memberOf module:Collections
  @method
  @see [async.each]{@link module:Collections.each}
  @alias forEachLimit
  @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 array index is not passed to the iteratee.
  If you need the index, use `eachOfLimit`.
  Invoked with (item, 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