public RuleOption withKeyword(String keyword) {
        setKeyword(keyword);
        return this;
    }
<p>
The keyword for the Suricata compatible rule option. You must include a <code>sid</code> (signature ID), and can
optionally include other keywords. For information about Suricata compatible keywords, see <a
href="https://suricata.readthedocs.io/en/suricata-6.0.9/rules/intro.html#rule-options">Rule options</a> in the
Suricata documentation.
</p>

@param keyword
       The keyword for the Suricata compatible rule option. You must include a <code>sid</code> (signature ID),
       and can optionally include other keywords. For information about Suricata compatible keywords, see <a
       href="https://suricata.readthedocs.io/en/suricata-6.0.9/rules/intro.html#rule-options">Rule options</a> in
       the Suricata documentation.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-networkfirewall/src/main/java/com/amazonaws/services/networkfirewall/model/RuleOption.java