Data Transfer Object Methods
DataTransferObjects (or DTOs) are transient objects meaning that changes to
their state are not directly persisted. They provide a mechanism where the set of
properties of an entity can be passed around in business logic without the implication
that changes to their values will be transparently persisted to the database.
getFoo()/setFoo(Bar)- Get or set the value of the propertyfoo.newEntity()- Create a new persistent entity based on the values currently held in the DTO.