public UntagMFADeviceRequest withSerialNumber(String serialNumber) {
        setSerialNumber(serialNumber);
        return this;
    }
<p>
The unique identifier for the IAM virtual MFA device from which you want to remove tags. For virtual MFA devices,
the serial number is the same as the ARN.
</p>
<p>
This parameter allows (through its <a href="http://wikipedia.org/wiki/regex">regex pattern</a>) a string of
characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of
the following characters: _+=,.@-
</p>

@param serialNumber
       The unique identifier for the IAM virtual MFA device from which you want to remove tags. For virtual MFA
       devices, the serial number is the same as the ARN.</p>
       <p>
       This parameter allows (through its <a href="http://wikipedia.org/wiki/regex">regex pattern</a>) a string
       of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also
       include any of the following characters: _+=,.@-
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iam/src/main/java/com/amazonaws/services/identitymanagement/model/UntagMFADeviceRequest.java