// Invalidates all access tokens for a user, so that they can no longer be used for authorization. This includes the access token that made this request.
// Proxies the Identity Service API validate/email/requestToken, but first checks that the given email address is not already associated with an account on this homeserver. See the Identity Service API for further information.
// Proxies the Identity Service API validate/msisdn/requestToken, but first checks that the given phone number is not already associated with an account on this homeserver. See the Identity Service API for further information.
// NOTE: Unclear whether it requires authentication or not.
// Proxies the Identity Service API validate/email/requestToken, but first checks that the given email address is associated with an account on this homeserver. This API should be used to request validation tokens when authenticating for the account/password endpoint.
// Proxies the Identity Service API validate/msisdn/requestToken, but first checks that the given phone number is associated with an account on this homeserver. This API should be used to request validation tokens when authenticating for the account/password endpoint.
// NOTE: Unclear whether it requires authentication or not.