polyListComponentConversion in OpenMaya

Question

I'm poking around in PyMel and OpenMaya trying to convert some pymel code. I was wondering if there is an OpenMaya equivalent of polyListComponentConversion from Pymel?

Ultimately, I'm trying to convert my collected UV shells to faces like so. But PyMel is a bit slow on larger objects.

    for uv_shell in shells:
        # Get the faces as unicode
        faces = pm.polyListComponentConversion(
            mesh.map[shell],
            fromUV=True,
            toFace=True
        )

Thanks in advance