public NotificationAction withSmsConfigurations(SMSConfiguration... smsConfigurations) {
        if (this.smsConfigurations == null) {
            setSmsConfigurations(new java.util.ArrayList<SMSConfiguration>(smsConfigurations.length));
        }
        for (SMSConfiguration ele : smsConfigurations) {
            this.smsConfigurations.add(ele);
        }
        return this;
    }
<p>
Contains the configuration information of SMS notifications.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setSmsConfigurations(java.util.Collection)} or {@link #withSmsConfigurations(java.util.Collection)} if
you want to override the existing values.
</p>

@param smsConfigurations
       Contains the configuration information of SMS notifications.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iotevents/src/main/java/com/amazonaws/services/iotevents/model/NotificationAction.java