def render_children(children, prefix='│   ├── ', last_item_prefix='│   └── '):
    """
    Simple helper for rendering element children

    :param children: children container
    :type children: iterable object
    :param prefix: string that will prefix the child element
    :type prefix: str
    :param last_item_prefix: string that will prefix the last child elemment
    :return: rendered children string
    :rtype: str
    """
    s = ''

    for item in children[:-1]:
        s += '{}{}\n'.format(prefix, item)

    s += '{}{}'.format(last_item_prefix, children[-1])

    return s