private void registerCommandHandlerMethod <TAttributed, TCommand>(Func <TAttributed> attributedObjectFactory, CommandHandlerAttributeMethod commandHandlerMethod)
where TAttributed : class
where TCommand : class, ICommand
{
Type commandType = typeof(TCommand);
CommandHandlerDelegate handleCommandDelegate;
if (_commandHandlerDelegatesByCommandType.TryGetValue(commandType, out handleCommandDelegate))
{
throw new InvalidOperationException($"Duplicate command handler registered for {commandType.Name}.");
}
CommandHandlerDelegate newHandleCommandDelegate = commandHandlerMethod.CreateDelegate <TAttributed, TCommand>(attributedObjectFactory);
_commandHandlerDelegatesByCommandType.Add(commandType, newHandleCommandDelegate);
}
