Find usages and reference to delegation origin

idea/testData/resolve/referenceInJava/DelegatedMethodFromTraitNoImpl.java

@@ -0,0 +1,9 @@
+import k.*;
+
+public class Test {
+    public static void bar(TraitWithDelegatedNoImpl some) {
+        some.<caret>foo();
+    }
+}
+
+// REF: (in k.TraitNoImpl).foo()

idea/testData/resolve/referenceInJava/DelegatedMethodFromTraitWithImpl.java

@@ -0,0 +1,9 @@
+import k.*;
+
+public class Test {
+    public static void bar(TraitWithDelegatedWithImpl some) {
+        some.<caret>foo();
+    }
+}
+
+// REF: (in k.TraitWithImpl).foo()

idea/testData/resolve/referenceInJava/dependencies.kt

@@ -39,4 +39,12 @@ object PlatformStaticFun {
 
 trait TraitNoImpl {
     fun foo()
-}
+}
+
+public class TraitWithDelegatedNoImpl(f: TraitNoImpl): TraitNoImpl by f
+
+trait TraitWithImpl {
+    fun foo() = 1
+}
+
+public class TraitWithDelegatedWithImpl(f: TraitWithImpl): TraitWithImpl by f