IDEA-169678 "Replace Optional.isPresent() condition with functional style expression" breaks code in case of 'Collection' return type

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/afterDifferentTrueFalseTypes.java

@@ -0,0 +1,18 @@
+// "Replace Optional.isPresent() condition with functional style expression" "true"
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+
+public class TestFile {
+
+  public static Collection<String> example() {
+    final Optional<String> root = Optional.empty();
+      return root.<Collection<String>>map(TestFile::foo).orElseGet(Collections::emptyList);
+  }
+
+  private static Set<String> foo(String s) {
+    return Collections.emptySet();
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/beforeDifferentTrueFalseTypes.java

@@ -0,0 +1,21 @@
+// "Replace Optional.isPresent() condition with functional style expression" "true"
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+
+public class TestFile {
+
+  public static Collection<String> example() {
+    final Optional<String> root = Optional.empty();
+    if (root<caret>.isPresent()) {
+      return foo(root.get());
+    }
+    return Collections.emptyList();
+  }
+
+  private static Set<String> foo(String s) {
+    return Collections.emptySet();
+  }
+}