setUserToken method
UserToken
Associates a certain user token with the current search.
Sending a user token will associate a search with a certain user. The insights taken from this could be used in combination with personalization for example. The user token has to be an alpha-numeric string with a maximum amount of 64 characters.
Source: Learn more
Implementation
AlgoliaQuery setUserToken(String value) {
assert(!_parameters.containsKey('userToken'));
return _copyWithParameters(<String, dynamic>{'userToken': value});
}