TimeoutTask doesn't correctly remove pending commands

TimeoutTask uses the following code to attempt to remove pending commands after the timeout period has expired:

        Boolean pending = store.getPending().containsKey(command);
        if (pending) {
            store.getPending().remove(command);
        }

However, the keys for the ConcurrentMap returned by getPending() are of type String, not Command. As a result, pending is always false (and even if it were true, remove would fail to do anything).

The intended functionality is likely:

        Boolean pending = store.getPending().containsKey(command.getId());
        if (pending) {
            store.getPending().remove(command.getId());
        }