Adding multiple styles to single layer with pyQGIS? [closed]

Question

On QGIS, I would like to programmatically assign multiple .qml styles to a single layer with python.

I can add styles manually from the Properties dialog on the layer by selecting Styles->Add... but I cannot add them from a .qml

So the question is two-fold:

1. How to add programmatically a second, third, etc style for the layer.
2. If the new styles can be added from saved .qml's

So far my knowledge is limmited to loading one individual .qml with

layer.loadNamedStyle(path_to_qml_1)