{"id":"decorator-border-extends-parent-behavior","text":"Border::Draw exemplifies extending rather than replacing parent behavior: it calls MonoGlyph::Draw(w) first to let the component draw itself, then calls DrawBorder(w) to add the border — this extension-not-replacement distinction is a key Decorator implementation technique.","truth_value":"IN","source":"entries/2026/06/17/gof-oo-chunk-5.md","source_url":"","source_hash":"","justifications":[],"dependents":["decorator-ordering-grounded-in-extension-semantics"],"metadata":{"last_premise_reviewed":"2026-06-17T18:19:22","premise_review_result":"pass"},"created_at":"2026-06-17T21:30:28+00:00","updated_at":"2026-06-17T21:30:28+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"decorator-border-extends-parent-behavior","truth_value":"IN","reason":"premise"}]}}