How to Specify t the property or field is not persistent?

Issue

• How to Specify the property or field is not persistent?
• JPAautomatic updates
• On our Fuse services, we are using JPA to deal with persistence and retrieval. By default when we set a property on a JPA Entity an insert/update will be done on flush or commit
• The Sample Project has the following logic:
  • Obtain an EntityA using a entityManager with is composed by Integer Id, Integer fiscalNumber and EntityB entity.
  • We call an external service to get EntityB.