InlineMethod: better transformation when return value is unused

java/java-tests/testData/refactoring/inlineMethod/ConvertToSingleReturnWithFinishedUnusedResult.java

@@ -0,0 +1,16 @@
+class A {
+  String foo(int i) {
+    if (i > 0) {
+      if (i == 10) return null;
+      System.out.println(i);
+    }
+    return String.valueOf(i);
+  }
+
+  void bar(int x) {
+    if (x > 0) {
+      f<caret>oo(x);
+    }
+    System.out.println("x < 0");
+  }
+}

java/java-tests/testData/refactoring/inlineMethod/ConvertToSingleReturnWithFinishedUnusedResult.java.after

@@ -0,0 +1,13 @@
+class A {
+
+    void bar(int x) {
+    if (x > 0) {
+        if (x > 0) {
+          if (x != 10) {
+              System.out.println(x);
+          }
+        }
+    }
+    System.out.println("x < 0");
+  }
+}

java/java-tests/testData/refactoring/inlineMethod/NotAStatement4.java.after

@@ -8,11 +8,9 @@ class AAA {
         if (s1.isEmpty()) {
             s1.add("foo");
             s2.add("foo");
-            return;
         } else {
             s1.add("foo");
             s2.add("foo");
-            return;
         }
     }
 }

java/java-tests/testData/refactoring/inlineMethod/UnusedResult.java

@@ -0,0 +1,13 @@
+import java.util.*;
+
+class Test {
+  boolean test(Set<String> set) {
+    return set.add("foo");
+  }
+
+  void use() {
+    Set<String> set = new HashSet<>();
+    <caret>test(set);
+    test(set);
+  }
+}

java/java-tests/testData/refactoring/inlineMethod/UnusedResult.java.after

@@ -0,0 +1,10 @@
+import java.util.*;
+
+class Test {
+
+    void use() {
+    Set<String> set = new HashSet<>();
+        set.add("foo");
+        set.add("foo");
+    }
+}