public async Task WriteSingleAppend()
 {
     var id = new StringId("test-" + Guid.NewGuid());
     await
         this.eventstore.AppendToStream(id, 0,
             new IEvent[] {BigEventData.Create(id, 120), BigEventData.Create(id, 110)});
 }
        public async Task CanAppendEvents()
        {
            var id = new StringId("mystream");
            var events = new IEvent[]
            {
                BigEventData.Create(id, 20), BigEventData.Create(id, 1024),
                BigEventData.Create(id, 400121), BigEventData.Create(id, 2048)
            };

            await this.eventstore.AppendToStream(id, 0, events);
            await this.eventstore.AppendToStream(id, 1, events);
            await this.eventstore.AppendToStream(new StringId("stream2"), 0, events);
        }