Supervisor.java

@Value
@JsonPropertyOrder({"id", "name", "employees"})
class Supervisor {

	@JsonIgnore
	private final Manager manager;

	public Long getId() {
		return this.manager.getId();
	}

	public String getName() {
		return this.manager.getName();
	}

	public List<String> getEmployees() {
		return manager.getEmployees().stream()
			.map(employee -> employee.getName() + "::" + employee.getRole())
			.collect(Collectors.toList());
	}
}