Does a integer bound to shape (Bind method) get written in .brep file ?

Ok, we all know we can bind an integer to a Shape, but does it get saved when you write the shape to disk (in the .brep file) ?

I am talking about the Bind method in TopTools_DataMapOfShapeInteger class :

Standard_EXPORT Standard_Boolean Bind (const TopoDS_Shape &K, const Standard_Integer &I)

That would be ace if it was actually saved to disk when dumping the shape.