One more test

idea/testData/shortenRefs/extensionForObject2.dependency.kt

@@ -0,0 +1,5 @@
+package dependency
+
+object AnObject
+
+val Foo.extProp: () -> Unit get() = {}

idea/testData/shortenRefs/extensionForObject2.kt

@@ -0,0 +1,5 @@
+import dependency.extProp
+
+fun foo() {
+    <selection>dependency.AnObject.extProp()</selection>
+}

idea/testData/shortenRefs/extensionForObject2.kt.after

@@ -0,0 +1,6 @@
+import dependency.AnObject
+import dependency.extProp
+
+fun foo() {
+    AnObject.extProp()
+}