public GCMMessage withSmallImageIconUrl(String smallImageIconUrl) {
        setSmallImageIconUrl(smallImageIconUrl);
        return this;
    }
<p>
The URL of the small icon image to display in the status bar and the content view of the push notification.
</p>

@param smallImageIconUrl
       The URL of the small icon image to display in the status bar and the content view of the push
       notification.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/GCMMessage.java