Javadoc
For now, this is a simple marker interface indicating that a class is a resource type.
There are two concrete types of implementations of this interrface. The first are
HL7.org's Resource structures (e.g.
org.hl7.fhir.instance.model.Patient
) and
the second are HAPI's Resource structures, e.g.
ca.uhn.fhir.model.dstu.resource.Patient
)