diff --git a/tests/bar/1.0/IBar.hal b/tests/bar/1.0/IBar.hal
index b57d9a0..82c6fc1 100644
--- a/tests/bar/1.0/IBar.hal
+++ b/tests/bar/1.0/IBar.hal
@@ -17,6 +17,7 @@
 package android.hardware.tests.bar@1.0;
 
 import android.hardware.tests.foo@1.0::IFoo;
+import android.hardware.tests.foo@1.0::Abc;
 import android.hardware.tests.foo@1.0::Unrelated;
 
 interface IBar extends android.hardware.tests.foo@1.0::IFoo {
@@ -29,4 +30,5 @@
     };
 
     thisIsNew();
+    expectNullHandle(handle h, Abc xyz) generates (bool hIsNull, bool xyzHasNull);
 };
diff --git a/tests/bar/1.0/default/Bar.cpp b/tests/bar/1.0/default/Bar.cpp
index 0257ee0..4ff9e6b 100644
--- a/tests/bar/1.0/default/Bar.cpp
+++ b/tests/bar/1.0/default/Bar.cpp
@@ -153,6 +153,12 @@
     return Void();
 }
 
+Return<void> Bar::expectNullHandle(const native_handle_t* h, const Abc& xyz, expectNullHandle_cb _hidl_cb) {
+    ALOGI("SERVER(Bar) h = %p, xyz.z = %p", h, xyz.z);
+    _hidl_cb(h == nullptr, xyz.z == nullptr);
+    return Void();
+}
+
 IBar* HIDL_FETCH_IBar(const char* /* name */) {
     return new Bar();
 }
diff --git a/tests/bar/1.0/default/Bar.h b/tests/bar/1.0/default/Bar.h
index ec55e8b..4e22b61 100644
--- a/tests/bar/1.0/default/Bar.h
+++ b/tests/bar/1.0/default/Bar.h
@@ -64,6 +64,7 @@
 
     // Methods from ::android::hardware::tests::bar::V1_0::IBar follow.
     Return<void> thisIsNew()  override;
+    Return<void> expectNullHandle(const native_handle_t* h, const Abc& xyz, expectNullHandle_cb _hidl_cb)  override;
 
 private:
     sp<IFoo> mFoo;