Problem with JsonType serialization with spring-data 3.2 and hibernate 6.3

hypersistence-utils-hibernate-63/src/test/java/io/hypersistence/utils/spring/domain/Movie.java

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+package io.hypersistence.utils.spring.domain;
+
+import com.google.common.collect.HashMultimap;
+import io.hypersistence.utils.hibernate.type.json.JsonType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import org.hibernate.annotations.Type;
+
+@Entity
+@Table(
+        name = "movie"
+)
+public class Movie {
+    @Id
+    private String name;
+
+    @Type(JsonType.class)
+    @Column(columnDefinition = "json", name = "actors")
+    private HashMultimap<String, String> cast = HashMultimap.create();
+
+    public String getName() {
+        return name;
+    }
+
+    public Movie setName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    public Movie addCast(String role, String name) {
+        cast.put(role, name);
+        return this;
+    }
+    public HashMultimap<String, String> getCast() {
+        return cast;
+    }
+}

hypersistence-utils-hibernate-63/src/test/java/io/hypersistence/utils/spring/repo/hibernate/JsonTypeJPATest.java

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+package io.hypersistence.utils.spring.repo.hibernate;
+
+import com.google.common.collect.HashMultimap;
+import io.hypersistence.utils.spring.domain.Movie;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+import java.util.Optional;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.transaction.support.TransactionCallback;
+import org.springframework.transaction.support.TransactionTemplate;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = SpringDataJPAHibernateConfiguration.class)
+@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
+public class JsonTypeJPATest {
+
+    protected final Logger LOGGER = LoggerFactory.getLogger(getClass());
+
+    @Autowired
+    private TransactionTemplate transactionTemplate;
+
+    @Autowired
+    private MovieRepository movieRepository;
+
+    @PersistenceContext
+    private EntityManager entityManager;
+
+    @Test
+    public void test() {
+        transactionTemplate.execute((TransactionCallback<Void>) transactionStatus -> {
+            movieRepository.persist(
+                    new Movie()
+                            .setName("No Time to Die")
+                            .addCast("actor", "Daniel Craig")
+                            .addCast("actor", "Rami Malek")
+            );
+            movieRepository.persistAndFlush(
+                    new Movie()
+                            .setName("Thunderball")
+            );
+            return null;
+        });
+
+        transactionTemplate.execute(transactionStatus -> {
+            HashMultimap<String, String> cast = HashMultimap.create();
+            cast.put("actor", "Sean Connery");
+            cast.put("actor", "Adolfo Celi");
+            movieRepository.updateActors("Thunderball", cast);
+            return null;
+        });
+
+        Optional<Movie> movie = transactionTemplate.execute(transactionStatus ->
+                movieRepository.findById("Thunderball")
+        );
+
+        assertNotNull(movie);
+        assertTrue(movie.isPresent());
+        Movie thunderball = movie.get();
+        HashMultimap<String, String> cast = thunderball.getCast();
+        assertNotNull(cast);
+        assertEquals(2, cast.size());
+    }
+}
+

hypersistence-utils-hibernate-63/src/test/java/io/hypersistence/utils/spring/repo/hibernate/MovieRepository.java

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+package io.hypersistence.utils.spring.repo.hibernate;
+
+import com.google.common.collect.HashMultimap;
+import io.hypersistence.utils.spring.domain.Movie;
+import io.hypersistence.utils.spring.repository.HibernateRepository;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface MovieRepository extends HibernateRepository<Movie>, JpaRepository<Movie, String> {
+
+    @Modifying
+    @Query("UPDATE Movie m SET m.cast = :cast WHERE m.name = :name")
+    void updateActors(@Param("name") String name, @Param("cast") HashMultimap<String, String> cast);
+}