Jackson Serializer for Apache Pair class with custom field name

Example.java

@Getter
@AllArgsConstructor
@NoArgsConstructor
public class ComplexData {
    private int id;
    
    @JsonSerialize(using = PairSerializer.class)
     // if left == right, R will overwrite L in the json result
    @PairIdentify(left = "anyName1", right = "anyName2")
    private Pair<L, R> data; // L, R is any type
    
    @JsonSerialize(contentUsing = PairSerializer.class) // use contentUsing for collection
    @PairIdentify(left = "anyName1", right = "anyName2")
    private List<Pair<L, R>> colelctionData;
}

PairIdentify.java

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface PairIdentify {
    String left() default "left";

    String right() default "right";
}

PairSerializer.java

@AllArgsConstructor // https://projectlombok.org/
@NoArgsConstructor
@SuppressWarnings({ "squid:S3740", "rawtypes" })
public class PairSerializer extends JsonSerializer<Pair> implements ContextualSerializer {
    private String left = "left";
    private String right = "right";

    @Override
    public void serialize(Pair value, JsonGenerator gen, SerializerProvider serializer) throws IOException {
        gen.writeStartObject();
        gen.writeObjectField(left, value.getLeft());
        gen.writeObjectField(right, value.getRight());
        gen.writeEndObject();
    }

    @Override
    public JsonSerializer<?> createContextual(SerializerProvider provider, BeanProperty property) {
        return Optional.ofNullable(property.getAnnotation(PairIdentify.class))
                .map(ann -> new PairSerializer(ann.left(), ann.right()))
                .orElseGet(PairSerializer::new);
    }
}