preserve comments while converting from lambda to method ref (IDEA-156734)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/lambda2methodReference/afterComments.java

@@ -0,0 +1,10 @@
+// "Replace lambda with method reference" "true"
+class Example {
+  public void m() {
+  }
+
+  {
+      //my comments here
+      Runnable r = this::m
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/lambda2methodReference/beforeComments.java

@@ -0,0 +1,12 @@
+// "Replace lambda with method reference" "true"
+class Example {
+  public void m() {
+  }
+
+  {
+    Runnable r = () -> {
+      //my comments here
+      m<caret>();
+    }
+  }
+}