{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ConnectionAttributes",
  "title": "ConnectionAttributes",
  "type": "object",
  "description": "Attribute configuration",
  "additionalProperties": false,
  "minProperties": 1,
  "properties": {
    "email": {
      "$ref": "#/components/schemas/EmailAttribute"
    },
    "phone_number": {
      "$ref": "#/components/schemas/PhoneAttribute"
    },
    "username": {
      "$ref": "#/components/schemas/UsernameAttribute"
    }
  }
}