lambda -> method refs: check if result method reference is valid

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

@@ -0,0 +1,13 @@
+// "Replace lambda with method reference" "true"
+class Example {
+  public void m() {
+  }
+
+  {
+    Runnable r = ex()::m;
+  }
+  
+  Example ex() {
+    return this;
+  }
+}

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

@@ -0,0 +1,12 @@
+// "Replace lambda with method reference" "false"
+import java.io.PrintStream;
+import java.util.function.BiConsumer;
+
+class Test {
+  {
+    BiConsumer<PrintStream, String> printer = (printStream, x) -> get(printSt<caret>ream).println(x);
+  }
+
+  PrintStream get(PrintStream p) {return p;}
+
+}

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

@@ -0,0 +1,13 @@
+// "Replace lambda with method reference" "true"
+class Example {
+  public void m() {
+  }
+
+  {
+    Runnable r = () -> ex().<caret>m();
+  }
+  
+  Example ex() {
+    return this;
+  }
+}