Prolog: Check whether given element is list or not

Below snippet checks whether given element is list or not.

listDemo.pl

isList([]).
isList([_|Tail]) :- isList(Tail).

1 ?- consult(listDemo).
true.

2 ?- isList([]).
true.

3 ?- isList([2]).
true.

4 ?- isList([2, 3, 5]).
true.

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