### Question:
User { public User username(String username) { this.username = username; return this; }  @JsonbProperty("id") Long getId(); void setId(Long id); User id(Long id); @JsonbProperty("username") String getUsername(); void setUsername(String username); User username(String username); @JsonbProperty("firstName") String getFirstName(); void setFirstName(String firstName); User firstName(String firstName); @JsonbProperty("lastName") String getLastName(); void setLastName(String lastName); User lastName(String lastName); @JsonbProperty("email") String getEmail(); void setEmail(String email); User email(String email); @JsonbProperty("password") String getPassword(); void setPassword(String password); User password(String password); @JsonbProperty("phone") String getPhone(); void setPhone(String phone); User phone(String phone); @JsonbProperty("userStatus") Integer getUserStatus(); void setUserStatus(Integer userStatus); User userStatus(Integer userStatus); @Override String toString();  }### Answer:
@Test public void usernameTest() { }