public void CorruptDate(string raw) => Assert.ThrowsAnyAsync <Exception>(() => Gravestone.ParseAsync(raw));
        public async Task UnknownDeceasedType(string raw)
        {
            var gravestone = await Gravestone.ParseAsync(raw);

            Assert.Equal(DeceasedType.Other, gravestone.DeceasedType);
        }
 public Task CorrectGravestone(string raw) => Gravestone.ParseAsync(raw);