public java.util.List<String> getSecurityGroupIds() {
        if (securityGroupIds == null) {
            securityGroupIds = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return securityGroupIds;
    }
<p>
One or more security groups to associate with the endpoint. If you don't specify a security group, the default
security group for your VPC will be associated with the endpoint.
</p>

@return One or more security groups to associate with the endpoint. If you don't specify a security group, the
        default security group for your VPC will be associated with the endpoint.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/CreateInstanceConnectEndpointRequest.java