@Override
    public void setProtocol(String protocol) {
        super.setProtocol(protocol);
        connectionModel.setProtocol(protocol);
    }
Initializes this configuration, associating it with the current
authenticated user and populating it with data from the given model
object.

@param currentUser
    The user that created or retrieved this configuration.

@param connectionModel 
    The model object backing this configuration.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/connection/ModeledGuacamoleConfiguration.java