title: include into Lombok ToString field from another object
body: <p>I have this POJOs</p>
  
  <pre><code>//@ToString(of = { "id", "name", "employee.id - not working" })
  @ToString(of = { "id", "name", "employee - working" })
  public class Company {
  
      private int id;
      private String name;
  
      @OneToMany(mappedBy="company")
      private Set&lt;Employee&gt; employee;
  }
  
  public class Employee{
  
      private int id;
      private String name;
  
      @ManyToOne
      private Company company;
  }
  </code></pre>
  
  <p>how can I print just <strong>id</strong> from object <strong>employee</strong>?
  I do not want to print whole object <strong>employee</strong>, just one field.</p>
  
  <p>Thank you</p>