> test RFC9555 GENDER
GENDER:O;intersex
> convert
"vCard": {
    "properties": [
      [
        "gender",
        {},
        "unknown",
        [
          "O",
          "intersex"
        ]
      ]
    ]
}

> test RFC9555 GRAMGENDER and PRONOUNS
GRAMGENDER:NEUTER
PRONOUNS;PREF=2:they/them
PRONOUNS;PREF=1:xe/xir
> convert
"speakToAs": {
  "grammaticalGender": "neuter",
  "pronouns": {
    "k1": {
      "pronouns": "they/them",
      "pref": 2
    },
    "k2": {
      "pronouns": "xe/xir",
      "pref": 1
    }
  }
}
> convert
GRAMGENDER:NEUTER
PRONOUNS;PREF=2;PROP-ID=k1:they/them
PRONOUNS;PREF=1;PROP-ID=k2:xe/xir
