merge(other) {
		const promises = new Set(other.promises);
		for (const p of this.promises) {
			promises.add(p);
		}
		return new AwaitDependenciesInitFragment(promises);
	}
@param {AwaitDependenciesInitFragment} other other AwaitDependenciesInitFragment
@returns {AwaitDependenciesInitFragment} AwaitDependenciesInitFragment