Implemented more general scheme of post-processing with intentions in J2K + added replacement of get/set with property access there

j2k/testData/JavaApi.java

@@ -49,6 +49,9 @@ public enum E {
 
 public class Base {
     public @Nullable String foo(@Nullable String s) { return s; }
+
+    public int getProperty() { return 1; }
+    public void setProperty(int value) {}
 }
 
 public class Derived extends Base {

j2k/testData/fileOrElement/codeSimplifications/IfNullReturnToElvis.kt

@@ -2,7 +2,7 @@ import java.io.File
 
 class C {
     fun foo(file: File): String {
-        val parent = file.getParentFile() ?: return ""
+        val parent = file.parentFile ?: return ""
         return parent.getName()
     }
 }

j2k/testData/fileOrElement/codeSimplifications/SyntheticExtensionPropertyAccess.java

@@ -0,0 +1,15 @@
+import javaApi.Base;
+
+class C extends Base {
+    public void f() {
+        Base other = Base();
+        int value = other.getProperty() + getProperty();
+        other.setProperty(1);
+        setProperty(other.getProperty() + value);
+        getBase(getProperty()).setProperty(0);
+    }
+
+    private Base getBase(int i) {
+        return new Base();
+    }
+}

j2k/testData/fileOrElement/codeSimplifications/SyntheticExtensionPropertyAccess.kt

@@ -0,0 +1,15 @@
+import javaApi.Base
+
+class C : Base() {
+    public fun f() {
+        val other = Base()
+        val value = other.property + property
+        other.property = 1
+        property = other.property + value
+        getBase(property).property = 0
+    }
+
+    private fun getBase(i: Int): Base {
+        return Base()
+    }
+}