public String getStartupAction() {
        return this.startupAction;
    }
<p>
The action to take when the establishing the tunnel for the VPN connection. By default, your customer gateway
device must initiate the IKE negotiation and bring up the tunnel. Specify <code>start</code> for Amazon Web
Services to initiate the IKE negotiation.
</p>
<p>
Valid Values: <code>add</code> | <code>start</code>
</p>
<p>
Default: <code>add</code>
</p>

@return The action to take when the establishing the tunnel for the VPN connection. By default, your customer
        gateway device must initiate the IKE negotiation and bring up the tunnel. Specify <code>start</code> for
        Amazon Web Services to initiate the IKE negotiation.</p>
        <p>
        Valid Values: <code>add</code> | <code>start</code>
        </p>
        <p>
        Default: <code>add</code>
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/VpnTunnelOptionsSpecification.java