Kapt: Keep KDoc comments in Java stubs (KT-21205)

plugins/kapt3/kapt3-compiler/testData/converter/comments.kt

@@ -0,0 +1,45 @@
+
+/** Test. */
+class Test {
+    /** method(). */
+    fun method() {}
+
+    /** method(int). */
+    fun method(a: Int) {}
+
+    /** method(String). */
+    fun method(a: String) {}
+
+    /** prop. */
+    val prop: String = ""
+
+    /** prop2. */
+    @Anno
+    val prop2: String = ""
+
+    /** prop3. */
+    var prop3: String
+        /** get. */ get() = ""
+        /** set. */ set(v) {}
+}
+
+/**
+ * Test2
+ * Multiline
+ * documentation.
+ */
+class Test2(val a: String)
+
+class Test3 /** constructor. */ protected constructor(val a: String)
+
+/** Obj. */
+object Obj
+
+@Target(AnnotationTarget.PROPERTY)
+annotation class Anno
+
+/* simple comment. */
+class Test4 {
+    // method simple comment
+    fun method() {}
+}