diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index fb7f4a8a46..b589d56e9f 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
+    <bytecodeTargetLevel target="17" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 7ae691b6aa..ba627bf558 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -9,7 +9,7 @@
   <component name="FrameworkDetectionExcludesConfiguration">
     <file type="web" url="file://$PROJECT_DIR$" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="IntelliJ IDEA Community Edition" project-jdk-type="IDEA JDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="IntelliJ IDEA Community Edition" project-jdk-type="IDEA JDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/resources/liveTemplates/flutter_miscellaneous.xml b/resources/liveTemplates/flutter_miscellaneous.xml
index e6b087ae0e..2c7b5d26fb 100644
--- a/resources/liveTemplates/flutter_miscellaneous.xml
+++ b/resources/liveTemplates/flutter_miscellaneous.xml
@@ -1,11 +1,11 @@
 <templateSet group="Flutter">
-  <template name="stless" value="class $NAME$ extends StatelessWidget {&#10;  const $NAME$({Key? key}) : super(key: key);&#10;&#10;  @override&#10;  Widget build(BuildContext context) {&#10;    return Container($END$);&#10;  }&#10;}&#10;" description="New Stateless widget" toReformat="false" toShortenFQNames="true">
+  <template name="stless" value="class $NAME$ extends StatelessWidget {&#10;  const $NAME$({Key? key}) : super(key: key);&#10;&#10;  @override&#10;  Widget build(BuildContext context) {&#10;    return Placeholder($END$);&#10;  }&#10;}&#10;" description="New Stateless widget" toReformat="false" toShortenFQNames="true">
     <variable name="NAME" expression="" defaultValue="" alwaysStopAt="true" />
     <context>
       <option name="DART_TOPLEVEL" value="true" />
     </context>
   </template>
-  <template name="stful" value="class $NAME$ extends StatefulWidget {&#10;  const $NAME$({Key? key}) : super(key: key);&#10;&#10;  @override&#10;  State&lt;$NAME$&gt; createState() =&gt; $SNAME$();&#10;}&#10;&#10;class $SNAME$ extends State&lt;$NAME$&gt; {&#10;  @override&#10;  Widget build(BuildContext context) {&#10;    return Container($END$);&#10;  }&#10;}&#10;" description="New Stateful widget" toReformat="false" toShortenFQNames="true">
+  <template name="stful" value="class $NAME$ extends StatefulWidget {&#10;  const $NAME$({Key? key}) : super(key: key);&#10;&#10;  @override&#10;  State&lt;$NAME$&gt; createState() =&gt; $SNAME$();&#10;}&#10;&#10;class $SNAME$ extends State&lt;$NAME$&gt; {&#10;  @override&#10;  Widget build(BuildContext context) {&#10;    return Placeholder($END$);&#10;  }&#10;}&#10;" description="New Stateful widget" toReformat="false" toShortenFQNames="true">
     <variable name="NAME" expression="" defaultValue="" alwaysStopAt="true" />
     <variable name="SNAME" expression="regularExpression(concat(&quot;_&quot;, NAME, &quot;State&quot;), &quot;^__&quot;, &quot;_&quot;)" defaultValue="" alwaysStopAt="false" />
     <context>
@@ -19,7 +19,7 @@
       <option name="DART_TOPLEVEL" value="true" />
     </context>
   </template>
-  <template name="stanim" value="class $NAME$ extends StatefulWidget {&#10;  const $NAME$({Key? key}) : super(key: key);&#10;&#10;  @override&#10;  State&lt;$NAME$&gt; createState() =&gt; _$NAME$State();&#10;}&#10;&#10;class _$NAME$State extends State&lt;$NAME$&gt; with SingleTickerProviderStateMixin {&#10;  late AnimationController _controller;&#10;&#10;  @override&#10;  void initState() {&#10;    super.initState();&#10;    _controller = AnimationController(vsync: this);&#10;  }&#10;&#10;  @override&#10;  void dispose() {&#10;    _controller.dispose();&#10;    super.dispose();&#10;  }&#10;&#10;  @override&#10;  Widget build(BuildContext context) {&#10;    return Container($END$);&#10;  }&#10;}&#10;" description="New Stateful widget with AnimationController" toReformat="false" toShortenFQNames="true">
+  <template name="stanim" value="class $NAME$ extends StatefulWidget {&#10;  const $NAME$({Key? key}) : super(key: key);&#10;&#10;  @override&#10;  State&lt;$NAME$&gt; createState() =&gt; _$NAME$State();&#10;}&#10;&#10;class _$NAME$State extends State&lt;$NAME$&gt; with SingleTickerProviderStateMixin {&#10;  late AnimationController _controller;&#10;&#10;  @override&#10;  void initState() {&#10;    super.initState();&#10;    _controller = AnimationController(vsync: this);&#10;  }&#10;&#10;  @override&#10;  void dispose() {&#10;    _controller.dispose();&#10;    super.dispose();&#10;  }&#10;&#10;  @override&#10;  Widget build(BuildContext context) {&#10;    return Placeholder($END$);&#10;  }&#10;}&#10;" description="New Stateful widget with AnimationController" toReformat="false" toShortenFQNames="true">
     <variable name="NAME" expression="" defaultValue="" alwaysStopAt="true" />
     <context>
       <option name="DART_TOPLEVEL" value="true" />
diff --git a/resources/liveTemplates/stanim.txt b/resources/liveTemplates/stanim.txt
index 15727d3f6e..cd73a4c7c6 100644
--- a/resources/liveTemplates/stanim.txt
+++ b/resources/liveTemplates/stanim.txt
@@ -22,6 +22,6 @@ class _$NAME$State extends State<$NAME$> with SingleTickerProviderStateMixin {
 
   @override
   Widget build(BuildContext context) {
-    return Container($END$);
+    return Placeholder($END$);
   }
 }
diff --git a/resources/liveTemplates/stful.txt b/resources/liveTemplates/stful.txt
index 1b972e5537..fb3c7516d3 100644
--- a/resources/liveTemplates/stful.txt
+++ b/resources/liveTemplates/stful.txt
@@ -8,6 +8,6 @@ class $NAME$ extends StatefulWidget {
 class $SNAME$ extends State<$NAME$> {
   @override
   Widget build(BuildContext context) {
-    return Container($END$);
+    return Placeholder($END$);
   }
 }
diff --git a/resources/liveTemplates/stless.txt b/resources/liveTemplates/stless.txt
index f534500964..f3b55c8916 100644
--- a/resources/liveTemplates/stless.txt
+++ b/resources/liveTemplates/stless.txt
@@ -3,6 +3,6 @@ class $NAME$ extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Container($END$);
+    return Placeholder($END$);
   }
 }