Create Function From Usage: Add empty lines when inserting new function

idea/testData/quickfix/createFromUsage/hasNext/afterCreateHasNextFromUsage1.kt

@@ -3,6 +3,7 @@ class FooIterator<T> {
     fun next(): Int {
         throw Exception("not implemented")
     }
+
     fun hasNext(): Boolean {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }

idea/testData/quickfix/createFromUsage/hasNext/afterCreateHasNextFromUsage2.kt

@@ -3,6 +3,7 @@ class FooIterator<T> {
     fun next(): T {
         throw Exception("not implemented")
     }
+
     fun hasNext(): Boolean {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }