import java.io.File;
import java.io.IOException;
+import java.util.Optional;
import net.pterodactylus.rhynodge.State;
import com.fasterxml.jackson.annotation.JsonProperty;
-import com.google.common.base.Optional;
import com.google.common.io.Files;
import org.hamcrest.Matchers;
import org.junit.BeforeClass;