Is it possible to add styles to component mapping?

[Rc85]

"Divider": {
            "meta": {
                "scope": "all",
                "parameters": {
                    "backgroundColor": {
                        "type": "string"
                    },
                    "height": {
                        "type": "number"
                    }
                },
                "appearances": {
                    "default": {
                        "default": true
                    }
                },
                "variantGroups": {},
                "states": {}
            },
            "appearances": {
                "default": {
                    "mapping": {
                        "height": 1,
                        "backgroundColor": "background-basic-color-3"
                    }
                }
            }
        },

This is the Divider mapping. I want to add marginVertical to the styles so that I don't have to do it for each time I use it. When I tried, it says it is not supported. Can this be done?