Synthetic extensions for non-public get/set java methods

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/SetterHasHigherAccess.kt

@@ -0,0 +1,16 @@
+// FILE: KotlinFile.kt
+package k
+
+import JavaClass
+
+fun foo(javaClass: JavaClass) {
+    val <!UNUSED_VARIABLE!>v<!> = javaClass.<!INVISIBLE_MEMBER!>something<!>
+    javaClass.<!INVISIBLE_MEMBER!>something<!> = 1
+    javaClass.<!INVISIBLE_MEMBER!>something<!>++
+}
+
+// FILE: JavaClass.java
+public class JavaClass {
+    protected int getSomething() { return 1; }
+    public void setSomething(int value) {}
+}