public String getGameServerGroupArn() {
        return this.gameServerGroupArn;
    }
<p>
A generated unique identifier for the game server group that includes the game server instance.
</p>

@return A generated unique identifier for the game server group that includes the game server instance.
aws-java-sdk-gamelift/src/main/java/com/amazonaws/services/gamelift/model/GameServerInstance.java