Operadriver is ignoring the chromeoption prefs

[iiTzGary]

I am using the same experimental options using chrome and it works perfectly but when I use opera it is like they were ignored.

I am using the following:

"prefs": {
"printing": {
"print_preview_sticky_settings": {
"appstate":"json selecting Save as PDF"
},
"download": {
"default_directory": "download path"
},
"savefile": {
"default_directory": "download path",
"type": 1
}
}

Any idea of how I can implement those experimental options?