code: function ensureNameForm(name, i) {
    var pos = i || 0; // just to be clear
    if (!utils.isArray(name.data.nameForms)) {
      name.data.nameForms = [];
    }
    while (pos >= name.data.nameForms.length) {
      name.data.nameForms.push({});
    }
    return name.data.nameForms[pos];
  }
docs: return the i'th name form; add it if it doesn't exist