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:- category(number_conversion,
implements(term_expansionp)).
term_expansion(0, zero).
term_expansion(1, one).
term_expansion(2, two).
term_expansion(3, three).
term_expansion(4, four).
term_expansion(5, five).
term_expansion(6, six).
term_expansion(7, seven).
term_expansion(8, eight).
term_expansion(9, nine).
:- end_category.
:- category(conversion_test).
:- public(test/2).
test(Term, Expansion) :-
expand_term(Term, Expansion).
:- end_category.
:- object(exp_public,
imports(public::number_conversion)).
:- end_object.
:- object(desc_public,
imports(conversion_test),
extends(exp_public)).
:- end_object.
:- object(exp_protected,
imports(protected::number_conversion)).
:- end_object.
:- object(desc_protected,
imports(conversion_test),
extends(exp_protected)).
:- end_object.
:- object(exp_private,
imports(private::number_conversion)).
:- end_object.
:- object(desc_private,
imports(conversion_test),
extends(exp_private)).
:- end_object.
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