public DnsRequestAction withProtocol(String protocol) {
        setProtocol(protocol);
        return this;
    }
<p>
The network connection protocol observed in the activity that prompted GuardDuty to generate the finding.
</p>

@param protocol
       The network connection protocol observed in the activity that prompted GuardDuty to generate the finding.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-guardduty/src/main/java/com/amazonaws/services/guardduty/model/DnsRequestAction.java