public void setRegexPatternString(String regexPatternString) {
        this.regexPatternString = regexPatternString;
    }
<p>
Specifies the regular expression (regex) pattern that you want AWS WAF to search for, such as
<code>B[a@]dB[o0]t</code>.
</p>

@param regexPatternString
       Specifies the regular expression (regex) pattern that you want AWS WAF to search for, such as
       <code>B[a@]dB[o0]t</code>.
aws-java-sdk-waf/src/main/java/com/amazonaws/services/waf/model/RegexPatternSetUpdate.java