Adding 'Add open modifier to supertype' fix for FINAL_SUPERTYPE error.

idea/testData/quickfix/modifiers/finalSupertype/afterExplicitlyFinalSupertype.kt

@@ -0,0 +1,3 @@
+// "Add 'open' modifier to supertype" "true"
+open class A {}
+class B : A<caret>() {}

idea/testData/quickfix/modifiers/finalSupertype/afterFinalSupertype.kt

@@ -0,0 +1,3 @@
+// "Add 'open' modifier to supertype" "true"
+open class A {}
+class B : A<caret>() {}

idea/testData/quickfix/modifiers/finalSupertype/afterImplementTraitFinalSupertype.kt

@@ -0,0 +1,6 @@
+// "Add 'open' modifier to supertype" "true"
+trait X {}
+trait Y {}
+
+open class A {}
+class B : X, A<caret>(), Y {}

idea/testData/quickfix/modifiers/finalSupertype/beforeEnumSupertype.kt

@@ -0,0 +1,5 @@
+// "Add 'open' modifier to supertype" "false"
+// ERROR: This type is final, so it cannot be inherited from
+// ERROR: Cannot access '<init>': it is 'private' in 'E'
+enum class E {}
+class A : E<caret>() {}

idea/testData/quickfix/modifiers/finalSupertype/beforeExplicitlyFinalSupertype.kt

@@ -0,0 +1,3 @@
+// "Add 'open' modifier to supertype" "true"
+final class A {}
+class B : A<caret>() {}

idea/testData/quickfix/modifiers/finalSupertype/beforeFinalLibrarySupertype.kt

@@ -0,0 +1,3 @@
+// "Add 'open' modifier to supertype" "false"
+// ERROR: This type is final, so it cannot be inherited from
+class A : String<caret>() {}

idea/testData/quickfix/modifiers/finalSupertype/beforeFinalSupertype.kt

@@ -0,0 +1,3 @@
+// "Add 'open' modifier to supertype" "true"
+class A {}
+class B : A<caret>() {}

idea/testData/quickfix/modifiers/finalSupertype/beforeImplementTraitFinalSupertype.kt

@@ -0,0 +1,6 @@
+// "Add 'open' modifier to supertype" "true"
+trait X {}
+trait Y {}
+
+class A {}
+class B : X, A<caret>(), Y {}

idea/testData/quickfix/modifiers/finalSupertype/finalJavaSupertype/javaCode/testPackage/JavaClass.java

@@ -0,0 +1,3 @@
+package testPackage;
+
+public final class JavaClass {}

idea/testData/quickfix/modifiers/finalSupertype/finalJavaSupertype/test/FinalJavaSupertype.before.kt

@@ -0,0 +1,5 @@
+// "Add 'open' modifier to supertype" "false"
+// ERROR: This type is final, so it cannot be inherited from
+import testPackage.*
+
+class foo : <caret>JavaClass() {}