Creating annotation for an array of object

Employee.java

package com.adjustit.employeeapi.model;

import java.io.Serializable;
import java.util.ArrayList;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Employee implements Serializable {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private int id;
	private String firstname;
	private String lastname;
	private String emailaddress;
	private int age;
	private double salary;	

	

	private ArrayList<EmployeeDoc> employeeDocuments;
	
	public Employee(int id, String firstname, String lastname, String emailaddress, int age, double salary) {
		super();
		this.id = id;
		this.firstname = firstname;
		this.lastname = lastname;
		this.emailaddress = emailaddress;
		this.age = age;
		this.salary = salary;
	}

	public Employee() {
		// TODO Auto-generated constructor stub
	}

	@XmlElement(name = "employeeId")
	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getFirstname() {
		return firstname;
	}

	public void setFirstname(String firstname) {
		this.firstname = firstname;
	}

	public String getLastname() {
		return lastname;
	}

	public void setLastname(String lastname) {
		this.lastname = lastname;
	}

	public String getEmailaddress() {
		return emailaddress;
	}

	public void setEmailaddress(String emailaddress) {
		this.emailaddress = emailaddress;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public double getSalary() {
		return salary;
	}

	public void setSalary(double salary) {
		this.salary = salary;
	}

	public static long getSerialversionuid() {
		return serialVersionUID;
	}

	@Override
	public String toString() {
		return "Employee {id=" + id + ", firstname=" + firstname + ", lastname=" + lastname + ", emailaddress="
				+ emailaddress + ", age=" + age + ", salary=" + salary + "}";
	}

	@XmlElementWrapper(name = "employeeDocuments")
	@XmlElement(name = "employeedoc")
	public ArrayList<EmployeeDoc> getEmployeeDocuments() {
		return employeeDocuments;
	}
	
	public void setEmployeeDocuments(ArrayList<EmployeeDoc> employeeDocuments) {
		this.employeeDocuments = employeeDocuments;
	}

}

Most examples apply the annotation on the field properties, because they have no getter for the collection