IDEA-135846 Dfa should warn about qualifiers in method references

java/java-tests/testData/inspection/dataFlow/fixture/MethodReferenceOnNullable.java

@@ -0,0 +1,18 @@
+import org.jetbrains.annotations.Nullable;
+
+class BrokenAlignment {
+
+  {
+    Runnable t = <warning descr="Dereference of 'getString()' may produce 'java.lang.NullPointerException'">getString()</warning>::length;
+    Runnable t2 = BrokenAlignment::getStringStatic;
+  }
+
+  @Nullable
+  private String getString() {
+    return null;
+  }
+  @Nullable
+  private static String getStringStatic() {
+    return null;
+  }
+}