{"id":"visitor-heterogeneous-advantage-encapsulation-contingent","text":"Visitor's structural generalization over Iterator (operating on heterogeneous type collections without requiring a common parent) provides genuinely broader extensibility only while Visitor does not break encapsulation — requiring element classes to expose internal state through their Visit interface may negate the flexibility gained by removing the common-parent constraint, trading type-hierarchy coupling for implementation coupling.","truth_value":"OUT","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["gof-visitor-no-common-parent-required","iterator-separates-traversal-from-aggregate"],"outlist":["gof-visitor-breaks-encapsulation"],"label":"Visitor's type-heterogeneity advantage requires encapsulation preservation"}],"dependents":[],"metadata":{"source_type":"derived"},"created_at":"2026-06-18T04:45:05+00:00","updated_at":"2026-06-18T04:45:05+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"visitor-heterogeneous-advantage-encapsulation-contingent","truth_value":"OUT","reason":"SL justification invalid","failed_antecedents":[],"label":"Visitor's type-heterogeneity advantage requires encapsulation preservation","violated_outlist":["gof-visitor-breaks-encapsulation"]}]}}