public Map<String, String> getValues() {
        return values;
    }
Returns a map of field names to values which backs this UserCredentials
object. Modifications to the returned map will directly affect the
associated name/value pairs.

@return
    A map of field names to their corresponding values which backs this
    UserCredentials object.
guacamole-ext/src/main/java/org/apache/guacamole/net/auth/credentials/UserCredentials.java