src/vs/editor/common/model/bracketPairsTextModelPart/bracketPairsTree/smallImmutableSet.ts/SmallImmutableSet/equals
class SmallImmutableSet:	public equals(other: SmallImmutableSet<T>): boolean {
		if (this.items !== other.items) {
			return false;
		}

		if (this.additionalItems.length !== other.additionalItems.length) {
			return false;
		}

		for (let i = 0; i < this.additionalItems.length; i++) {
			if (this.additionalItems[i] !== other.additionalItems[i]) {
				return false;
			}
		}

		return true;
	}