This inspection suggests to replace null check with Objects/Stream static method. Example:

if (message == null) {
  application.messageStorage().save(new EmptyMessage());
} else {
  application.messageStorage().save(message);
}

can be replaced with


  application.messageStorage()
    .save(Objects.requireNonNullElseGet(message, () -> new EmptyMessage()));

New in 2017.3