public UpdateRegexMatchSetRequest withChangeToken(String changeToken) {
        setChangeToken(changeToken);
        return this;
    }
<p>
The value returned by the most recent call to <a>GetChangeToken</a>.
</p>

@param changeToken
       The value returned by the most recent call to <a>GetChangeToken</a>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-waf/src/main/java/com/amazonaws/services/waf/model/UpdateRegexMatchSetRequest.java