title: Ebean how to exclude String as column
body: <p>So I have the below code. Where I am trying to create a table called SecurityType which has values ID and description. I would like to add two strings "Administrator" and "user" to it. Is there a way I can exclude these two from being columns in the ebean table? or do I need to move to another class?</p>
  
  <pre><code>@Entity
  public class SecurityType extends Model {
      public static final String ADMIN = "Administrator";
      public static final String USER = "User";
      @Id
      public Long id;
  
      public String description;
  }
  </code></pre>