- this.identifier = Preconditions.checkNotNull(identifier, "Identifier should not be null");
- this.storeTxFactories = Preconditions.checkNotNull(storeTxFactories,
- "Store Transaction Factories should not be null");
+ this.identifier = requireNonNull(identifier, "Identifier should not be null");
+ this.storeTxFactories = requireNonNull(storeTxFactories, "Store Transaction Factories should not be null");