diff --git a/tests/safeunion/1.0/default/SafeUnion.cpp b/tests/safeunion/1.0/default/SafeUnion.cpp
index 7047d16..11b2e36 100644
--- a/tests/safeunion/1.0/default/SafeUnion.cpp
+++ b/tests/safeunion/1.0/default/SafeUnion.cpp
@@ -191,6 +191,26 @@
     return Void();
 }
 
+Return<void> SafeUnion::setInterfaceD(const ::android::hardware::tests::safeunion::V1_0::ISafeUnion::InterfaceTypeSafeUnion& myUnion, const hidl_string& d, setInterfaceD_cb _hidl_cb) {
+    LOG(INFO) << "SERVER(SafeUnion) setInterfaceD(myUnion, " << toString(d) << ")";
+
+    InterfaceTypeSafeUnion myNewUnion = myUnion;
+    myNewUnion.d(d);
+
+    _hidl_cb(myNewUnion);
+    return Void();
+}
+
+Return<void> SafeUnion::setInterfaceE(const ::android::hardware::tests::safeunion::V1_0::ISafeUnion::InterfaceTypeSafeUnion& myUnion, const hidl_vec<hidl_string>& e, setInterfaceE_cb _hidl_cb) {
+    LOG(INFO) << "SERVER(SafeUnion) setInterfaceE(myUnion, " << toString(e) << ")";
+
+    InterfaceTypeSafeUnion myNewUnion = myUnion;
+    myNewUnion.e(e);
+
+    _hidl_cb(myNewUnion);
+    return Void();
+}
+
 ISafeUnion* HIDL_FETCH_ISafeUnion(const char* /* name */) {
     return new SafeUnion();
 }
diff --git a/tests/safeunion/1.0/default/SafeUnion.h b/tests/safeunion/1.0/default/SafeUnion.h
index 07d88d2..e900fce 100644
--- a/tests/safeunion/1.0/default/SafeUnion.h
+++ b/tests/safeunion/1.0/default/SafeUnion.h
@@ -52,6 +52,8 @@
     Return<void> setInterfaceA(const InterfaceTypeSafeUnion& myUnion, uint32_t a, setInterfaceA_cb _hidl_cb) override;
     Return<void> setInterfaceB(const InterfaceTypeSafeUnion& myUnion, const hidl_array<int8_t, 7>& b, setInterfaceB_cb _hidl_cb) override;
     Return<void> setInterfaceC(const InterfaceTypeSafeUnion& myUnion, const sp<::android::hardware::tests::safeunion::V1_0::IOtherInterface>& c, setInterfaceC_cb _hidl_cb) override;
+    Return<void> setInterfaceD(const InterfaceTypeSafeUnion& myUnion, const hidl_string& d, setInterfaceD_cb _hidl_cb) override;
+    Return<void> setInterfaceE(const InterfaceTypeSafeUnion& myUnion, const hidl_vec<hidl_string>& e, setInterfaceE_cb _hidl_cb) override;
 };
 
 extern "C" ISafeUnion* HIDL_FETCH_ISafeUnion(const char* name);