public LaunchTemplateInstanceNetworkInterfaceSpecification withNetworkCardIndex(Integer networkCardIndex) {
        setNetworkCardIndex(networkCardIndex);
        return this;
    }
<p>
The index of the network card.
</p>

@param networkCardIndex
       The index of the network card.
@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/LaunchTemplateInstanceNetworkInterfaceSpecification.java