Coroutine version of custom Bolt Unit

DialogueUnit.cs

using System.Collections;
using System.Collections.Generic;
using Bolt;
using UnityEngine;
using System;
using DefaultNamespace;
using Ludiq;

[UnitTitle("Dialogue")]
[UnitShortTitle("Dialogue")]
[UnitSubtitle("A dialogue element.")]
[UnitCategory("Nadagam")]
public class DialogueUnit : Unit
{
    [DoNotSerialize]
    public ControlInput inputTrigger;

    [DoNotSerialize]
    public ControlOutput outputTrigger;

    [DoNotSerialize]
    public ValueInput character;

    [DoNotSerialize]
    public ValueInput dialogueText;

    protected override void Definition()
    {
        //The lambda to execute our node action when the inputTrigger port is triggered.
        inputTrigger = ControlInputCoroutine("inputTrigger", (flow) =>
        {
            Talk(flow);
            return Delay(flow);
        });
        outputTrigger = ControlOutput("outputTrigger");

        character = ValueInput<Character>("Character", null);

        dialogueText = ValueInput<string>("Text", String.Empty);

        //To display that we need the myValueB value to be set to let the node process
        Requirement(dialogueText, inputTrigger);
        Requirement(character, inputTrigger);
    }

    public IEnumerator Delay(Flow flow)
    {
        yield return new WaitForSeconds(3);
        yield return outputTrigger;
    }

    private void Talk(Flow flow)
    {
        var Saying = flow.GetValue<string>(dialogueText);
        var Character = flow.GetValue<Character>(character);

        Debug.Log(Character.Name + " says " + Saying);
    }
}