State<LogoApp> createState() => _LogoAppState();

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class _LogoAppState extends State<LogoApp> {

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            class _LogoAppState extends State<LogoApp> with SingleTickerProviderStateMixin {

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              late Animation<double> animation;

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              late AnimationController controller;

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              @override

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              void initState() {

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                super.initState();

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                controller =

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