Java: Fixed "Unwrap else branch" - create consistent PSI (IDEA-192543)

java/java-tests/testData/codeInsight/unwrapElseBranch/afterChainedIf4.java

@@ -0,0 +1,15 @@
+// "Unwrap 'else' branch" "true"
+
+class T {
+    String f(boolean a, boolean b) {
+        if (b) {
+            return "When true";
+        } else {
+            if (a) {
+                return "a";
+            }
+            return "Otherwise";
+        }
+        return "Default";
+    }
+}

java/java-tests/testData/codeInsight/unwrapElseBranch/beforeChainedIf4.java

@@ -0,0 +1,14 @@
+// "Unwrap 'else' branch" "true"
+
+class T {
+    String f(boolean a, boolean b) {
+        if (b) {
+            return "When true";
+        } else if (a) {
+            return "a";
+        } <caret>else {
+            return "Otherwise";
+        }
+        return "Default";
+    }
+}