public void setProtocolVersion(String protocolVersion) {
        this.protocolVersion = protocolVersion;
    }
<p>
The version of the communication protocol for the interface.
</p>

@param protocolVersion
       The version of the communication protocol for the interface.
aws-java-sdk-iotfleetwise/src/main/java/com/amazonaws/services/iotfleetwise/model/CanInterface.java