def _get_linked_object(item, link_key):
    """
    Resolve STAC object from item links.

    :param item: STAC item
    :param link_key: name of the link - NOTE: unique link names are assumed!
    :return: linked STAC object
    """
    link = item.get_links(link_key).pop().resolve_stac_object()
    return link.target