public void setPullStartedAt(java.util.Date pullStartedAt) {
        this.pullStartedAt = pullStartedAt;
    }
<p>
The Unix timestamp for the time when the container image pull began.
</p>

@param pullStartedAt
       The Unix timestamp for the time when the container image pull began.
aws-java-sdk-ecs/src/main/java/com/amazonaws/services/ecs/model/Task.java