Add tests for FreeVariables

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java b/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java
index 9c5d557..3e3c7c6 100644
--- a/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java
+++ b/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java
@@ -12,7 +12,7 @@ import static org.zwobble.couscous.util.Casts.tryCast;
 import static org.zwobble.couscous.util.ExtraStreams.toStream;
 
 public class FreeVariables {
-    public static List<VariableDeclaration> findFreeVariables(List<FormalArgumentNode> formalArguments, List<StatementNode> body) {
+    public static List<VariableDeclaration> findFreeVariables(List<FormalArgumentNode> formalArguments, List<? extends Node> body) {
         Stream<VariableDeclaration> referencedDeclarations = body.stream()
             .flatMap(FreeVariables::findReferencedDeclarations);
         // TODO: consider nested arguments