[Gradle] Keep deprecated KotlinTargetHierarchy in previous KotlinTargetHierarchy.kt source file

^KT-58676 Verification Pending

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinSourceSetTree.kt

@@ -10,7 +10,6 @@ import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSetTree.Companion.integrat
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSetTree.Companion.main
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSetTree.Companion.test
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSetTree.Companion.unitTest
-import org.jetbrains.kotlin.tooling.core.Interner
 
 /**
  * When applying any [KotlinHierarchyTemplate] (e.g. by calling `applyDefaultHierarchyTemplate()`), the descriptor will
@@ -125,107 +124,3 @@ private class KotlinSourceSetTreeImpl(override val name: String) : KotlinSourceS
         return name.hashCode()
     }
 }
-
-
-/*
-Deprecated APIs
- */
-
-@Deprecated("Use KotlinSourceSetTree instead")
-interface KotlinTargetHierarchy {
-
-    /**
-     * When applying any [KotlinTargetHierarchyDescriptor] (e.g. by calling `applyDefaultHierarchyTemplate()`), the descriptor will
-     * be applied on individual compilations, creating multiple trees of shared SourceSets.
-     *
-     * The name of given shared source set within the target hierarchy will be built by
-     * `lowerCamelCase(nameOfGroup, nameOfSourceSetTree)`
-     * So for the 'common' group within the 'main' tree the shared SourceSet name will be 'commonMain'
-     *
-     * The most default case will create two well known SourceSetTrees:
-     * - The `main` tree with `commonMain` as its root SourceSet
-     * - The `test` tree with `commonTest` as its root SourceSet
-     *
-     * e.g.
-     * ```kotlin
-     * kotlin {
-     *     applyDefaultHierarchyTemplate()
-     *     jvm()
-     *     iosX64()
-     *     iosArm64()
-     * }
-     * ```
-     *
-     * will create two SourceSetTrees: "main" and "test"
-     * ```
-     *                    "main"                               "test"
-     *
-     *                  commonMain                           commonTest
-     *                      |                                    |
-     *                      |                                    |
-     *           +----------+----------+              +----------+----------+
-     *           |                     |              |                     |
-     *          ...                  jvmMain         ...                  jvmTest
-     *           |                                    |
-     *           |                                    |
-     *         iosMain                              iosTest
-     *           |                                    |
-     *      +----+-----+                         +----+-----+
-     *      |          |                         |          |
-     * iosX64Main   iosArm64Main            iosX64Test   iosArm64Test
-     * ```
-     *
-     *
-     * Usually, the name of the compilation correlates to the name of the SourceSetTree:
-     * As seen in the previous example, the "main" tree under the "commonMain" root contains all 'main' compilations of the projects
-     * targets. The "test" tree under the "commonTest" root contains all 'test' compilations of the projects targets.
-     *
-     * There are some exceptions, where the name of the compilations cannot be chosen by the user directly (Android)
-     * In this case, the name of the SourceSet can be configured outside the target hierarchy DSL.
-     */
-    @Deprecated("Use KotlinSourceSetTree instead", replaceWith = ReplaceWith("KotlinSourceSetTree"))
-    class SourceSetTree(override val name: String) : KotlinSourceSetTree {
-        override fun toString(): String = name
-
-        override fun equals(other: Any?): Boolean {
-            if (other !is KotlinSourceSetTree) return false
-            return this.name == other.name
-        }
-
-        override fun hashCode(): Int {
-            return name.hashCode()
-        }
-
-        @Suppress("DEPRECATION")
-        companion object {
-            /**
-             * The 'main' SourceSetTree. Typically, with 'commonMain' as the root SourceSet
-             */
-            val main = SourceSetTree("main")
-
-            /**
-             * The 'test' SourceSetTree. Typically, with 'commonTest' as the root SourceSet
-             */
-            val test = SourceSetTree("test")
-
-            /**
-             * Special pre-defined SourceSetTree: Can be used to introduce a new tree with 'commonUnitTest' as the root SourceSet
-             * e.g. relevant for organising Android unitTest compilations/SourceSets
-             */
-            val unitTest = SourceSetTree("unitTest")
-
-
-            /**
-             * Special pre-defined SourceSetTree: Can be used to introduce a new tree with 'commonInstrumentedTest' as the root SourceSet
-             * e.g. relevant for organising Android instrumented compilations/SourceSets
-             */
-            val instrumentedTest = SourceSetTree("instrumentedTest")
-
-
-            /**
-             * Special pre-defined SourceSetTree: Can be used to introduce a new tree with 'commonIntegrationTest' as root SourceSEt
-             */
-            val integrationTest = SourceSetTree("integrationTest")
-        }
-    }
-}

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinTargetHierarchy.kt

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin
+
+@Deprecated("Use KotlinSourceSetTree instead")
+interface KotlinTargetHierarchy {
+
+    @Deprecated("Use KotlinSourceSetTree instead", replaceWith = ReplaceWith("KotlinSourceSetTree"))
+    class SourceSetTree(override val name: String) : KotlinSourceSetTree {
+        override fun toString(): String = name
+
+        override fun equals(other: Any?): Boolean {
+            if (other !is KotlinSourceSetTree) return false
+            return this.name == other.name
+        }
+
+        override fun hashCode(): Int {
+            return name.hashCode()
+        }
+
+        @Suppress("DEPRECATION")
+        companion object {
+            /**
+             * The 'main' SourceSetTree. Typically, with 'commonMain' as the root SourceSet
+             */
+            val main = SourceSetTree("main")
+
+            /**
+             * The 'test' SourceSetTree. Typically, with 'commonTest' as the root SourceSet
+             */
+            val test = SourceSetTree("test")
+
+            /**
+             * Special pre-defined SourceSetTree: Can be used to introduce a new tree with 'commonUnitTest' as the root SourceSet
+             * e.g. relevant for organising Android unitTest compilations/SourceSets
+             */
+            val unitTest = SourceSetTree("unitTest")
+
+
+            /**
+             * Special pre-defined SourceSetTree: Can be used to introduce a new tree with 'commonInstrumentedTest' as the root SourceSet
+             * e.g. relevant for organising Android instrumented compilations/SourceSets
+             */
+            val instrumentedTest = SourceSetTree("instrumentedTest")
+
+
+            /**
+             * Special pre-defined SourceSetTree: Can be used to introduce a new tree with 'commonIntegrationTest' as root SourceSEt
+             */
+            val integrationTest = SourceSetTree("integrationTest")
+        }
+    }
+}