def METHOD_NAME(title=None, folder=None, filter=None):
    if filter == "json":
        filter = "JSON files (*.json)|*.json||"
    elif filter == "obj":
        filter = "OBJ files (*.obj)|*.obj||"
    elif filter == "fofin":
        filter = "FOFIN session files (*.fofin)|*.fofin||"
    else:
        pass
    return rs.OpenFileName(title, filter=filter, folder=folder)