Where the oem action should be added?

Could you, please, clarify where the oem action should be added if there is no Action property in the DMTF resource schema - like Thermal resource.

If there is an Action property in the resource, it is clear that oem action should be in Actions->Oem. But if there is no Action property in the resource there are following possibilities:

1) Add MyNew.Action to Action->Oem property of the resource 
{
    Actions:{
        Oem:{
            MyNew.Action: {}
        }
    }
}

2) Add MyNew.Action to Oem->Action->Oem property of the resource
{

    Oem: {
        Actions:{

            Oem:{

                MyNew.Action: {}

            }
        }
    }

}

3) Add MyNew.Action to Oem->Action- property of the resource

{

    Oem: {

        Actions:{

            MyNew.Action: {}

        }

    }

}


Which one is correct?