Don’t return property when it’s an empty list with jackson

You can use @JsonInclude(JsonInclude.Include.NON_EMPTY) annotation on your class or filed.

import com.fasterxml.jackson.annotation.JsonInclude;
@JsonInclude(JsonInclude.Include.NON_EMPTY)
class Person
{
    String name;
    List<Event> events;
    //....getter, setter
}