public void setWaitUntil(String waitUntil) {
        this.waitUntil = waitUntil;
    }
<p>
The date and time, in ISO 8601 format, when Amazon Pinpoint determines whether the activity's conditions have
been met or the activity moves participants to the next activity in the journey.
</p>

@param waitUntil
       The date and time, in ISO 8601 format, when Amazon Pinpoint determines whether the activity's conditions
       have been met or the activity moves participants to the next activity in the journey.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/WaitTime.java