In my case 'Diego' is the owner of the folder (and also the admin) while 'Roberto' has 'Can Edit' rights. Calling the sharing info API I get the following output:
{
"users": [
{
"access_type": {
".tag": "editor"
},
"is_inherited": false,
"user": {
"account_id": "dbid:AAAl6V-VAYEz5PzvUmZhUu_KPL9m_li5___",
"email": "XXX",
"display_name": "Diego Xxx",
"same_team": true,
"team_member_id": "dbmid:AADwcKnvNdpOkOPN2uRqsp2lnbIVdf7x___"
}
},
{
"access_type": {
".tag": "editor"
},
"is_inherited": false,
"user": {
"account_id": "dbid:AABNuFJHhMtFuVgwzkhN39ikVy3FHinH___",
"email": "xxx",
"display_name": "Roberto Xxx",
"same_team": true,
"team_member_id": "dbmid:AADk5HtiURDzve7T-iGndBZE7v0tfQ94___"
}
}
],
"groups": [],
"invitees": []
}
So both users appear as 'editors' (which is true) but I cannot determine the owner.
Moreover: according to this link it should be possible to transfer the ownership to someone else, but the menu item 'make owner' is not visible (I can only see 'can view' and 'can edit'). Does it depend on the fact that i'm on a trial version?