, in descending order, until it finds one where _predicate_ returns *true*.
    If such an element is found, `findLastIndex` immediately returns the index of that element value. Otherwise, `findLastIndex` returns -1.
    </p>
    <p>
    If a _thisArg_ parameter is provided, it will be used as the *this* value for each invocation of _predicate_. If it is not provided, *undefined* is used instead.
    </p>
    <p>
    _predicate_ is called with three arguments: the value of the element, the index of t