How to use org.hibernate.boot.internal

public MetadataBuildingContextTestingImpl(StandardServiceRegistry serviceRegistry) {
  buildingOptions = new MetadataBuilderImpl.MetadataBuildingOptionsImpl( serviceRegistry );
  bootstrapContext = new BootstrapContextImpl( serviceRegistry, buildingOptions );
  mappingDefaults = new MetadataBuilderImpl.MappingDefaultsImpl( serviceRegistry );
  metadataCollector = new InFlightMetadataCollectorImpl( bootstrapContext, buildingOptions );
  objectNameNormalizer = new ObjectNameNormalizer() {
    @Override
    protected MetadataBuildingContext getBuildingContext() {
      return MetadataBuildingContextTestingImpl.this;
    }
  };
}

@Override
public void addUniquePropertyReference(String referencedClass, String propertyName) {
  addDelayedPropertyReferenceHandler(
      new DelayedPropertyReferenceHandlerAnnotationImpl( referencedClass, propertyName, true )
  );
}

@Override
public MetadataBuilder applyScanOptions(ScanOptions scanOptions) {
  this.bootstrapContext.injectScanOptions( scanOptions );
  return this;
}

private BootstrapContextImpl() {
  StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().build();
  MetadataBuildingOptions buildingOptions = new MetadataBuilderImpl.MetadataBuildingOptionsImpl( serviceRegistry );
  delegate = new org.hibernate.boot.internal.BootstrapContextImpl( serviceRegistry, buildingOptions );
}

@Override
public SessionFactoryBuilder applyBeanManager(Object beanManager) {
  this.optionsBuilder.applyBeanManager(  beanManager );
  return this;
}

@Override
public SessionFactoryBuilder applyName(String sessionFactoryName) {
  this.optionsBuilder.applySessionFactoryName( sessionFactoryName );
  return this;
}

@Override
public SessionFactoryBuilder applyAutoFlushing(boolean enabled) {
  this.optionsBuilder.enableSessionAutoFlushing( enabled );
  return this;
}

@Override
public SessionFactoryBuilder enableReleaseResourcesOnCloseEnabled(boolean enable) {
  this.optionsBuilder.enableReleaseResourcesOnClose( enable );
  return this;
}

@Override
public SessionFactoryBuilder applyStatisticsSupport(boolean enabled) {
  this.optionsBuilder.enableStatisticsSupport( enabled );
  return this;
}

@Override
public SessionFactoryBuilder applyStatelessInterceptor(Class<? extends Interceptor> statelessInterceptorClass) {
  this.optionsBuilder.applyStatelessInterceptor( statelessInterceptorClass );
  return this;
}

@Override
public SessionFactoryBuilder applySqlComments(boolean enabled) {
  this.optionsBuilder.enableCommentsSupport( enabled );
  return this;
}

@Override
public SessionFactoryBuilder applyJdbcBatchingForVersionedEntities(boolean enabled) {
  this.optionsBuilder.enableJdbcBatchingForVersionedEntities( enabled );
  return this;
}

@Override
public SessionFactoryBuilder applyScrollableResultsSupport(boolean enabled) {
  this.optionsBuilder.enableScrollableResultSupport( enabled );
  return this;
}

@Override
public SessionFactoryBuilder applyResultSetsWrapping(boolean enabled) {
  this.optionsBuilder.enableResultSetWrappingSupport( enabled );
  return this;
}

@Override
public SessionFactoryBuilder applyJtaTrackingByThread(boolean enabled) {
  this.optionsBuilder.enableJtaTrackingByThread( enabled );
  return this;
}

@Override
public MetadataBuilder applyIndexView(IndexView jandexView) {
  this.bootstrapContext.injectJandexView( jandexView );
  return this;
}

@Override
public MetadataBuilder applyScanEnvironment(ScanEnvironment scanEnvironment) {
  this.bootstrapContext.injectScanEnvironment( scanEnvironment );
  return this;
}

@Override
public SessionFactoryBuilder applyEntityTuplizerFactory(EntityTuplizerFactory entityTuplizerFactory) {
  this.optionsBuilder.applyEntityTuplizerFactory( entityTuplizerFactory );
  return this;
}

@Override
public SessionFactoryBuilder applyMultiTableBulkIdStrategy(MultiTableBulkIdStrategy strategy) {
  this.optionsBuilder.applyMultiTableBulkIdStrategy( strategy );
  return this;
}

@Override
public void addPropertyReference(String referencedClass, String propertyName) {
  addDelayedPropertyReferenceHandler(
      new DelayedPropertyReferenceHandlerAnnotationImpl( referencedClass, propertyName, false )
  );
}