### Question:
R4ProgramStageToFhirDataProvider extends AbstractProgramStageToFhirDataProvider { @Nonnull @Override public Set<FhirVersion> getFhirVersions() { return FhirVersion.R4_ONLY; } R4ProgramStageToFhirDataProvider( @Nonnull ScriptExecutor scriptExecutor, @Nonnull ProgramMetadataService metadataService, @Nonnull EventService eventService ); @Nonnull @Override Set<FhirVersion> getFhirVersions();  }### Answer:
@Test public void getFhirVersions() { Assert.assertEquals( FhirVersion.R4_ONLY, provider.getFhirVersions() ); }