Really bad service locator

MyServiceLocator.cs

    public interface IServiceLocator {

        //This is real bad, don't use this
        //There's so much missing from this

        void Register<T>(T t);
        T Resolve<T>();
    }

    public class ServiceLocator : IServiceLocator
    {
        //This is worse than the above interface. Seriously, don't use this

        private readonly Dictionary<Type, object> _types = new Dictionary<Type, object>();

        public void Register<T>(T t)
        {
            _types.Add(typeof(T), t);
        }

        public T Resolve<T>()
        {
            var obj = _types[typeof(T)];
            return (T)obj;
        }
    }