Id implementation using phantom types

Id.cs

public struct Id<T>
{
	public readonly int Value;

	public Id(int value)
	{
		this.value = value;
	}

	public static implicit operator Id<T>(int value)
	{
		return new Id<T>(value);
	}

	public override bool Equals(object obj)
	{
		return obj is Id<T> && ((Id<T>) obj).value == value;
	}

	public override int GetHashCode()
	{
		return value.GetHashCode();
	}

	public override string ToString()
	{
		return value.ToString();
	}
}