{"id":"visitor-structure-independent-operations","text":"Visitor's operation extensibility is broadly flexible in both structure type and class hierarchy: it can traverse various object structures (composites, sets, lists, DAGs) and does not require a common parent class among visited objects — making it one of the most general operation-extension mechanisms in the GoF catalog.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["visitor-traverses-any-object-structure","gof-visitor-no-common-parent-required"],"outlist":[],"label":"Two independently stated Visitor generality properties (any structure, no common parent) establish Visitor as universally applicable for operations"}],"dependents":["visitor-accumulates-across-structures","visitor-complete-operation-extensibility"],"metadata":{"source_type":"derived","review_result":"insufficient","repair_action":"softened"},"created_at":"2026-06-17T23:07:32+00:00","updated_at":"2026-06-18T06:15:08+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"visitor-structure-independent-operations","truth_value":"IN","reason":"SL justification valid","antecedents":["visitor-traverses-any-object-structure","gof-visitor-no-common-parent-required"],"label":"Two independently stated Visitor generality properties (any structure, no common parent) establish Visitor as universally applicable for operations"},{"node":"visitor-traverses-any-object-structure","truth_value":"IN","reason":"premise"},{"node":"gof-visitor-no-common-parent-required","truth_value":"IN","reason":"premise"}]}}