public String getContainerInstance() {
        return this.containerInstance;
    }
<p>
The container instance ID or full ARN of the container instance. For more information about the ARN format, see
<a href="https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-account-settings.html#ecs-resource-ids">
Amazon Resource Name (ARN)</a> in the <i>Amazon ECS Developer Guide</i>.
</p>

@return The container instance ID or full ARN of the container instance. For more information about the ARN
        format, see <a href=
        "https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-account-settings.html#ecs-resource-ids"
        >Amazon Resource Name (ARN)</a> in the <i>Amazon ECS Developer Guide</i>.
aws-java-sdk-ecs/src/main/java/com/amazonaws/services/ecs/model/DiscoverPollEndpointRequest.java