// Update – immutable record + replace public Optional<Todo> toggle(long id) return findById(id).map(old -> var updated = new Todo(old.id(), old.title(), !old.completed()); store.put(id, updated); return updated; );

pom.xml (Maven) – add the native plugin:

: Likely stands for "English," indicating that this specific version of the file includes English subtitles or was marketed for an English-speaking audience.

// src/main/java/com/example/todo/TodoService.java package com.example.todo;