public VpnConnectionOptions withTunnelOptions(TunnelOption... tunnelOptions) {
        if (this.tunnelOptions == null) {
            setTunnelOptions(new com.amazonaws.internal.SdkInternalList<TunnelOption>(tunnelOptions.length));
        }
        for (TunnelOption ele : tunnelOptions) {
            this.tunnelOptions.add(ele);
        }
        return this;
    }
<p>
Indicates the VPN tunnel options.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setTunnelOptions(java.util.Collection)} or {@link #withTunnelOptions(java.util.Collection)} if you want
to override the existing values.
</p>

@param tunnelOptions
       Indicates the VPN tunnel options.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/VpnConnectionOptions.java