function mapLimit (coll, limit, iteratee, callback) {
    return _map(eachOfLimit(limit), coll, iteratee, callback)
}
function mapLimit (coll, limit, iteratee, callback) {
    return _map(eachOfLimit(limit), coll, iteratee, callback)
}
function mapLimit ( coll , limit , iteratee , callback ) { return _map ( eachOfLimit ( limit ) , coll , iteratee , callback ) }
The same as [`map`]{@link module:Collections.map} but runs a maximum of `limit` async operations at a time.

@name mapLimit
@static
@memberOf module:Collections
@method
@see [async.map]{@link module:Collections.map}
@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 iteratee should complete with the transformed item.
Invoked with (item, callback).
@param {Function} [callback] - A callback which is called when all `iteratee`
functions have finished, or an error occurs. Results is an array of the
transformed items from the `coll`. Invoked with (err, results).
@returns {Promise} a promise, if no callback is passed
The same as [ map ] { @link module : Collections . map } but runs a maximum of limit async operations at a time .
Creates a new collection with the results of running each iteration in the collection.