const map1 = new Map();
map1.set('a', "Apple");
map1.set('b', "Ball");
map1.set('c', "Cat");
console.log(map1.get('a'));
// Expected output: Apple
map1.set('a', "Attentive");
console.log(map1.get('a'));
// Expected output: Attentive
console.log(map1.size);
// Expected output: 3
map1.delete('b');
console.log(map1.size);
// Expected output: 2
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