* @param env The environment that the plugin will use.
*/
public DataflowWithRates(TypedAtomicActor ptActor, Actor actor,
Context context, Environment env) {
super(ptActor, actor, context, env);
_eval = new ExprEvaluator(_context, _env);
_actorInterpreter = new DataflowWithRatesActorInterpreter(_actor,
_context, _env, _inputPorts, _outputPorts);
}