AccountManagement.Accounts.Controllers.EventPersister.PersistEvent C# (CSharp) Method

        public static void PersistEvent(object ev)
        {
            var commitHeaders = new Dictionary<string, object>
            {
                {"CommitId", Guid.NewGuid()},
            };

            esConn.AppendToStream(
                "BeganFollowing", ExpectedVersion.Any, ToEventData(Guid.NewGuid(),
                ev, commitHeaders
            ));
        }

        [ActionName("index")] // Web API will not allow duplicate names
        public IHttpActionResult IndexPOST(string accountId, Follower follower)
        {
            // accountId will be taken from querystring - it is a simple type
            // follower will be taken from request body - it is a complex type

            var evnt = new BeganFollowing
            {
                AccountId  = accountId,
                FollowerId = follower.AccountId
            };

            EventPersister.PersistEvent(evnt);
            return(RedirectToRoute("Account Followers", new { accountId = accountId }));
        }