How to read the layer information in object visualization, and how to read properties?

[BruceGeLi]

Dear developers,

Hi, I am working on some development on RLbench, I would like to read the visualization layer information using your python API, but I could not find how. More generally speaking, how to use your API to read objects' properties?

In the latest official python API (https://manual.coppeliarobotics.com/en/apiFunctions.htm), I can easily do this property reading by calling several getProperty functions, given object id and the property string. For example, for layer reading, I can call
sim.getIntProperty(idx, "layer")

In you API, only the object is accepted and the returned value need to do some bit operation. These bit operation for me is quite confusing, and I could not find any documentation for it.