warn about immutable lists passed to setItems()

GitOrigin-RevId: a70b45cb5674ce15543f96be8d55c56bdd469208

platform/platform-api/src/com/intellij/util/ui/TableViewModel.java

@@ -1,7 +1,9 @@
 // Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.util.ui;
 
+import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Unmodifiable;
 
 import javax.swing.table.AbstractTableModel;
 import java.util.List;
@@ -11,6 +13,8 @@ public abstract class TableViewModel<Item> extends AbstractTableModel implements
    * Set the model source data to make UI show the data from this list
    * @param items must be mutable to be able to accommodate the changes from UI
    */
+  @Contract(mutates = "param1")
   public abstract void setItems(@NotNull List<Item> items);
+  @Unmodifiable
   public abstract @NotNull List<Item> getItems();
 }