{
  "args": {
    "users": {
      "desc": "Comma separated lists of users.  The ordering of the users is preserved whenever a MPIM group is returned.",
      "required": true,
      "type": "users"
    }
  },
  "desc": "This method opens a multiparty direct message.",
  "errors": {
    "not_enough_users": "Needs at least 2 users to open",
    "too_many_users": "Needs at most 8 users to open",
    "users_list_not_supplied": "Missing `users` in request"
  }
}