MessageBuilder.java

public abstract class MessageBuilder<M> {

 private String name;
 private String id;

 public abstract M build();

 String getId() {
     return id;
 }

 String getName() {
     return name;
 }

 public MessageBuilder<M> withId(final String id) {
     this.id = id;
     return this;
 }

 public MessageBuilder<M> withName(final String name) {
     this.name = name;
     return this;
 }
}