private void RegisterShapeEntityType(ShapeType shapeType, bool create)
{
int version = FindLibraryVersion(shapeType.LibraryName, create);
IEntityType entityType = new EntityType(shapeType.FullName, EntityCategory.Shape,
version, () => shapeType.CreateInstanceForLoading(), shapeType.GetPropertyDefinitions(version));
repository.AddEntityType(entityType);
}