public void setTimestamp(java.util.Date timestamp) {
        this.timestamp = timestamp;
    }
<p>
A timestamp for when you update an accelerator in Global Accelerator from IPv4 to dual-stack, or dual-stack to
IPv4.
</p>

@param timestamp
       A timestamp for when you update an accelerator in Global Accelerator from IPv4 to dual-stack, or
       dual-stack to IPv4.
aws-java-sdk-globalaccelerator/src/main/java/com/amazonaws/services/globalaccelerator/model/AcceleratorEvent.java