safe delete: do not show conflicts about method reference if it occurs in the argument to be deleted (IDEA-163964)

java/java-tests/testData/refactoring/safeDelete/NoConflictOnDeleteParameterWithMethodRefArg.java

@@ -0,0 +1,13 @@
+import java.util.function.Consumer;
+
+public class Subst {
+  void test1() {
+    test2(Subst::bar);
+  }
+
+  private static void bar(Object o) {
+
+  }
+
+  void test2(final Consumer<Object> consu<caret>mer) {}
+}

java/java-tests/testData/refactoring/safeDelete/NoConflictOnDeleteParameterWithMethodRefArg_after.java

@@ -0,0 +1,13 @@
+import java.util.function.Consumer;
+
+public class Subst {
+  void test1() {
+    test2();
+  }
+
+  private static void bar(Object o) {
+
+  }
+
+  void test2() {}
+}