const student1 = { name: 'James', age: 26, gender: 'male' }; const student2 = { name: 'Julia', age: 27, gender: 'female' }; const student3 = { name: 'Richard', age: 31, gender: 'male' }; const roster = new WeakSet([student1, student2, student3]); console.log(roster);