fix nullability - setName expects not-null string

GitOrigin-RevId: 880dc9aa1238e789557c24429e1d1856913ddda4

platform/lang-impl/api-dump-unreviewed.txt

@@ -16551,7 +16551,6 @@ c:com.intellij.tools.ToolEditorDialog
 f:com.intellij.tools.ToolManager
 - com.intellij.tools.BaseToolManager
 - <init>():V
-- s:getInstance():com.intellij.tools.ToolManager
 f:com.intellij.tools.ToolProcessAdapter
 - com.intellij.execution.process.ProcessAdapter
 - <init>(com.intellij.openapi.project.Project,Z,java.lang.String):V

platform/lang-impl/api-dump.txt

@@ -1009,6 +1009,11 @@ com.intellij.slicer.SliceLanguageSupportProvider
 - a:startAnalyzeLeafValues(com.intellij.ide.util.treeView.AbstractTreeStructure,java.lang.Runnable):V
 - a:startAnalyzeNullness(com.intellij.ide.util.treeView.AbstractTreeStructure,java.lang.Runnable):V
 - supportValueFilters(com.intellij.psi.PsiElement):Z
+f:com.intellij.tools.ToolManager
+- sf:Companion:com.intellij.tools.ToolManager$Companion
+- sf:getInstance():com.intellij.tools.ToolManager
+f:com.intellij.tools.ToolManager$Companion
+- f:getInstance():com.intellij.tools.ToolManager
 com.intellij.unscramble.AnalyzeStacktraceUtil$ConsoleFactory
 - a:createConsoleComponent(com.intellij.execution.ui.ConsoleView,com.intellij.openapi.actionSystem.DefaultActionGroup):javax.swing.JComponent
 com.intellij.util.indexing.UnindexedFilesUpdaterListener

platform/lang-impl/src/com/intellij/openapi/options/CompoundScheme.java

@@ -1,4 +1,4 @@
-// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.openapi.options;
 
 import com.intellij.openapi.util.NlsSafe;
@@ -16,7 +16,7 @@ public class CompoundScheme<E extends SchemeElement> implements ExternalizableSc
   protected String myName;
   protected final ArrayList<E> myElements = new ArrayList<>();
 
-  public CompoundScheme(final String name) {
+  public CompoundScheme(@NotNull String name) {
     setName(name);
   }
 
@@ -37,7 +37,7 @@ public class CompoundScheme<E extends SchemeElement> implements ExternalizableSc
   }
 
   @Override
-  public final void setName(final @NotNull String name) {
+  public final void setName(@NotNull String name) {
     myName = name;
     for (E template : myElements) {
       template.setGroupName(name);

platform/lang-impl/src/com/intellij/tools/ToolManager.kt

@@ -9,6 +9,7 @@ import com.intellij.openapi.components.service
 import com.intellij.openapi.options.SchemeManagerFactory
 import com.intellij.openapi.options.SchemeProcessor
 import com.intellij.tools.ToolManager.Companion.getInstance
+import org.jetbrains.annotations.ApiStatus
 
 @Service
 class ToolManager : BaseToolManager<Tool>(SchemeManagerFactory.getInstance(), "tools", ToolsBundle.message("tools.settings")) {
@@ -17,16 +18,18 @@ class ToolManager : BaseToolManager<Tool>(SchemeManagerFactory.getInstance(), "t
     fun getInstance(): ToolManager = service<ToolManager>()
   }
 
-  override fun createProcessor(): SchemeProcessor<ToolsGroup<Tool?>, ToolsGroup<Tool?>> {
-    return object : ToolsProcessor<Tool?>() {
-      override fun createToolsGroup(groupName: String?) = ToolsGroup<Tool?>(groupName)
+  override fun createProcessor(): SchemeProcessor<ToolsGroup<Tool>, ToolsGroup<Tool>> {
+    return object : ToolsProcessor<Tool>() {
+      override fun createToolsGroup(groupName: String) = ToolsGroup<Tool>(groupName)
 
       override fun createTool(): Tool = Tool()
     }
   }
 
+  @ApiStatus.Internal
   override fun getActionIdPrefix(): String = Tool.ACTION_ID_PREFIX
 
+  @ApiStatus.Internal
   public override fun getGroupIdPrefix(): String = "Tools_"
 }
 

platform/lang-impl/src/com/intellij/tools/ToolsGroup.java

@@ -1,10 +1,11 @@
-// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.tools;
 
 import com.intellij.openapi.options.CompoundScheme;
+import org.jetbrains.annotations.NotNull;
 
 public final class ToolsGroup<T extends Tool> extends CompoundScheme<T> {
-  public ToolsGroup(final String name) {
+  public ToolsGroup(@NotNull String name) {
     super(name);
   }
 

platform/lang-impl/src/com/intellij/tools/ToolsProcessor.java

@@ -1,4 +1,4 @@
-// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package com.intellij.tools;
 
@@ -109,7 +109,7 @@ public abstract class ToolsProcessor<T extends Tool> extends NonLazySchemeProces
     return Tool.DEFAULT_GROUP_NAME;
   }
 
-  protected abstract ToolsGroup<T> createToolsGroup(String groupName);
+  protected abstract ToolsGroup<T> createToolsGroup(@NotNull String groupName);
 
   protected abstract T createTool();