public Map<String, String> getTokens() {
        return tokenValues;
    }
Returns a map of all tokens, with each key being a token name, and each
value being the corresponding token value. Changes to this map will
directly affect the tokens associated with this filter.

@return
    A map of all token names and their corresponding values.
guacamole-ext/src/main/java/org/apache/guacamole/token/TokenFilter.java