- this.version = Preconditions.checkNotNull(version);
- this.actor = Preconditions.checkNotNull(actor);
- this.name = Preconditions.checkNotNull(name);
- Preconditions.checkArgument(maxMessages > 0, "Maximum messages has to be positive, not %s", maxMessages);
+ this.version = requireNonNull(version);
+ this.actor = requireNonNull(actor);
+ this.name = requireNonNull(name);
+ checkArgument(maxMessages > 0, "Maximum messages has to be positive, not %s", maxMessages);