default int lastIndexWhere(final Predicate<? super T> predicate) {
		return lastIndexWhere(predicate, 0, length());
	}
Returns the index of the last element on which the given predicate
returns {@code true}, or -1 if the predicate returns false for every
sequence element.

@param predicate the search predicate.
@return the index of the last element on which the given predicate
         returns {@code true}, or -1 if the predicate returns false for
         every sequence element.
@throws NullPointerException if the given {@code predicate} is {@code null}.
jenetics/src/main/java/io/jenetics/util/Seq.java