- Preconditions.checkNotNull(identifier, "identifier must be set");
- Preconditions.checkNotNull(replyTo, "replyTo must be set");
- Preconditions.checkNotNull(onFailureCallback, "onFailureCallback must be set");
- Preconditions.checkState(fileBackedStream == null || message == null,
+ requireNonNull(identifier, "identifier must be set");
+ requireNonNull(replyTo, "replyTo must be set");
+ requireNonNull(onFailureCallback, "onFailureCallback must be set");
+ checkState(fileBackedStream == null || message == null,