MappedCommandToAggregateRootMethodOrConstructor Execute adjustment?

gistfile1.cs

        /// <summary>
        /// Executes the command.
        /// </summary>
        /// <param name="command">The command to execute.</param>
        /// <returns>The aggregateroot of type <typeparamref name="TAggRoot"/> on which we executed the command.</returns>
        void ICommandExecutor<TCommand>.Execute(TCommand command)
        {
            var factory = NcqrsEnvironment.Get<IUnitOfWorkFactory>();
            using (var work = factory.CreateUnitOfWork(command.CommandIdentifier))
            {
                var aggregateroot = _aggregaterootfetchfunc(_getidfromcommandfunc(command), command.KnownVersion);
                if (aggregateroot == null)
                {
                    aggregateroot = _aggregaterootcreatorfunc(command);
                }
                else
                {
                    _mappedmethodforcommandfunc(command, aggregateroot);
                }

                work.Accept();
            }
        }

gistfile2.cs

        /// <summary>
        /// Executes the command.
        /// </summary>
        /// <param name="command">The command to execute.</param>
        /// <returns>The aggregateroot of type <typeparamref name="TAggRoot"/> on which we executed the command.</returns>
        void ICommandExecutor<TCommand>.Execute(TCommand command)
        {
            var factory = NcqrsEnvironment.Get<IUnitOfWorkFactory>();
            using (var work = factory.CreateUnitOfWork(command.CommandIdentifier))
            {
                var aggregateroot = _aggregaterootfetchfunc(_getidfromcommandfunc(command), command.KnownVersion) ?? _aggregaterootcreatorfunc(command);
                _mappedmethodforcommandfunc(command, aggregateroot);

                work.Accept();
            }
        }