{{alias}}( x, dims[, options] )
    Returns an iterator which iterates over each subarray in a stack of
    subarrays according to a list of specified stack dimensions.

    If an environment supports Symbol.iterator, the returned iterator is
    iterable.

    If an environment supports Symbol.iterator, the function explicitly does not
    invoke an ndarray's `@@iterator` method, regardless of whether this method
    is defined.

    Parameters
    ----------
    x: ndarray
        Input ndarray for which to create the iterator. Must have at least
        `dims.length+1` dimensions.

    dims: Array<integer>
        Indices of dimensions to stack. If a dimension index is less than zero,
        the index is resolved relative to the last dimension, with the last
        dimension corresponding to the value `-1`. The list of indices must be
        unique and resolve to dimension indices sorted in ascending order.

    options: Object (optional)
        Options.

    options.readonly: boolean (optional)
        Boolean indicating whether returned ndarray views should be read-only.
        If the input ndarray is read-only, setting this option to `false` raises
        an exception. Default: true.

    Returns
    -------
    iterator: Object
        Iterator.

    iterator.next(): Function
        Returns an iterator protocol-compliant object containing the next
        iterated value (if one exists) and a boolean flag indicating whether the
        iterator is finished.

    iterator.return( [value] ): Function
        Finishes an iterator and returns a provided value.

    Examples
    --------
    > var x = {{alias:@stdlib/ndarray/array}}( [ [ [ 1, 2 ], [ 3, 4 ] ] ] );
    > var it = {{alias}}( x, [ 1, 2 ] );
    > var v = it.next().value
    <ndarray>[ [ 1, 2 ], [ 3, 4 ] ]

    See Also
    --------