diff --git a/configstore/utils/include/configstore/Utils.h b/configstore/utils/include/configstore/Utils.h
index 862e812..ee85549 100644
--- a/configstore/utils/include/configstore/Utils.h
+++ b/configstore/utils/include/configstore/Utils.h
@@ -42,6 +42,15 @@
 using ::android::hardware::configstore::V1_0::OptionalUInt64;
 using ::android::hardware::configstore::V1_0::OptionalString;
 
+// a function to retrieve and cache the service handle
+// for a particular interface
+template <typename I>
+sp<I> getService() {
+    // static initializer used for synchronizations
+    static sp<I> configs = I::getService();
+    return configs;
+}
+
 // arguments V: type for the value (i.e., OptionalXXX)
 //           I: interface class name
 //           func: member function pointer
@@ -49,9 +58,10 @@
         (std::function<void(const V&)>)>
 decltype(V::value) get(const decltype(V::value) &defValue) {
     using namespace android::hardware::details;
+    // static initializer used for synchronizations
     auto getHelper = []()->V {
         V ret;
-        sp<I> configs = I::getService();
+        sp<I> configs = getService<I>();
 
         if (!configs.get()) {
             // fallback to the default value
diff --git a/renderscript/1.0/vts/functional/VtsHalRenderscriptV1_0TargetTest.cpp b/renderscript/1.0/vts/functional/VtsHalRenderscriptV1_0TargetTest.cpp
index f505d01..2670b8d 100644
--- a/renderscript/1.0/vts/functional/VtsHalRenderscriptV1_0TargetTest.cpp
+++ b/renderscript/1.0/vts/functional/VtsHalRenderscriptV1_0TargetTest.cpp
@@ -28,6 +28,7 @@
 }
 
 void RenderscriptHidlTest::TearDown() {
+    context->contextFinish();
     context->contextDestroy();
 }
 
diff --git a/tests/Android.bp b/tests/Android.bp
index 7276a0b..7b2b2d3 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -14,6 +14,7 @@
     "inheritance/1.0/default",
     "libhwbinder/1.0",
     "libhwbinder/1.0/default",
+    "libhwbinder/aidl",
     "memory/1.0",
     "memory/1.0/default",
     "msgq/1.0",
@@ -21,8 +22,4 @@
     "pointer/1.0",
     "pointer/1.0/default",
     "pointer/1.0/default/lib",
-    "versioning/1.0",
-    "versioning/2.2",
-    "versioning/2.3",
-    "versioning/2.4",
 ]
diff --git a/tests/libhwbinder/aidl/Android.bp b/tests/libhwbinder/aidl/Android.bp
new file mode 100644
index 0000000..a662085
--- /dev/null
+++ b/tests/libhwbinder/aidl/Android.bp
@@ -0,0 +1,15 @@
+cc_library_shared {
+    name: "android.hardware.tests.libbinder",
+
+    srcs: ["android/tests/binder/IBenchmark.aidl"],
+
+    aidl: {
+        export_aidl_headers: true,
+    },
+
+    shared_libs: [
+        "libbinder",
+        "libutils",
+    ],
+
+}
diff --git a/tests/libhwbinder/aidl/Android.mk b/tests/libhwbinder/aidl/Android.mk
deleted file mode 100644
index 1c175d8..0000000
--- a/tests/libhwbinder/aidl/Android.mk
+++ /dev/null
@@ -1,13 +0,0 @@
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.libbinder
-LOCAL_MODULE_CLASS := SHARED_LIBRARIES
-
-LOCAL_SRC_FILES := android/tests/binder/IBenchmark.aidl
-
-LOCAL_SHARED_LIBRARIES := \
-  libbinder \
-  libutils \
-
-include $(BUILD_SHARED_LIBRARY)
diff --git a/tests/versioning/1.0/Android.bp b/tests/versioning/1.0/Android.bp
deleted file mode 100644
index 647e043..0000000
--- a/tests/versioning/1.0/Android.bp
+++ /dev/null
@@ -1,59 +0,0 @@
-// This file is autogenerated by hidl-gen. Do not edit manually.
-
-filegroup {
-    name: "android.hardware.tests.versioning@1.0_hal",
-    srcs: [
-        "IFoo.hal",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@1.0_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@1.0",
-    srcs: [
-        ":android.hardware.tests.versioning@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/1.0/FooAll.cpp",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@1.0_genc++_headers",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@1.0",
-    srcs: [
-        ":android.hardware.tests.versioning@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/1.0/IFoo.h",
-        "android/hardware/tests/versioning/1.0/IHwFoo.h",
-        "android/hardware/tests/versioning/1.0/BnHwFoo.h",
-        "android/hardware/tests/versioning/1.0/BpHwFoo.h",
-        "android/hardware/tests/versioning/1.0/BsFoo.h",
-    ],
-}
-
-cc_library_shared {
-    name: "android.hardware.tests.versioning@1.0",
-    defaults: ["hidl-module-defaults"],
-    generated_sources: ["android.hardware.tests.versioning@1.0_genc++"],
-    generated_headers: ["android.hardware.tests.versioning@1.0_genc++_headers"],
-    export_generated_headers: ["android.hardware.tests.versioning@1.0_genc++_headers"],
-    vendor_available: true,
-    shared_libs: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "liblog",
-        "libutils",
-        "libcutils",
-    ],
-    export_shared_lib_headers: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-    ],
-}
diff --git a/tests/versioning/1.0/Android.mk b/tests/versioning/1.0/Android.mk
deleted file mode 100644
index 81ffd08..0000000
--- a/tests/versioning/1.0/Android.mk
+++ /dev/null
@@ -1,76 +0,0 @@
-# This file is autogenerated by hidl-gen. Do not edit manually.
-
-LOCAL_PATH := $(call my-dir)
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V1.0-java
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_JAVA_LIBRARIES := \
-    android.hidl.base-V1.0-java \
-
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V1_0/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@1.0::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_JAVA_LIBRARY)
-
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V1.0-java-static
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    android.hidl.base-V1.0-java-static \
-
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V1_0/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@1.0::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/1.0/IFoo.hal b/tests/versioning/1.0/IFoo.hal
deleted file mode 100644
index 0571eff..0000000
--- a/tests/versioning/1.0/IFoo.hal
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@1.0;
-
-interface IFoo {
-};
diff --git a/tests/versioning/2.2/Android.bp b/tests/versioning/2.2/Android.bp
deleted file mode 100644
index 3a4a003..0000000
--- a/tests/versioning/2.2/Android.bp
+++ /dev/null
@@ -1,66 +0,0 @@
-// This file is autogenerated by hidl-gen. Do not edit manually.
-
-filegroup {
-    name: "android.hardware.tests.versioning@2.2_hal",
-    srcs: [
-        "IBar.hal",
-        "IFoo.hal",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@2.2_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.2",
-    srcs: [
-        ":android.hardware.tests.versioning@2.2_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/2.2/BarAll.cpp",
-        "android/hardware/tests/versioning/2.2/FooAll.cpp",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@2.2_genc++_headers",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.2",
-    srcs: [
-        ":android.hardware.tests.versioning@2.2_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/2.2/IBar.h",
-        "android/hardware/tests/versioning/2.2/IHwBar.h",
-        "android/hardware/tests/versioning/2.2/BnHwBar.h",
-        "android/hardware/tests/versioning/2.2/BpHwBar.h",
-        "android/hardware/tests/versioning/2.2/BsBar.h",
-        "android/hardware/tests/versioning/2.2/IFoo.h",
-        "android/hardware/tests/versioning/2.2/IHwFoo.h",
-        "android/hardware/tests/versioning/2.2/BnHwFoo.h",
-        "android/hardware/tests/versioning/2.2/BpHwFoo.h",
-        "android/hardware/tests/versioning/2.2/BsFoo.h",
-    ],
-}
-
-cc_library_shared {
-    name: "android.hardware.tests.versioning@2.2",
-    defaults: ["hidl-module-defaults"],
-    generated_sources: ["android.hardware.tests.versioning@2.2_genc++"],
-    generated_headers: ["android.hardware.tests.versioning@2.2_genc++_headers"],
-    export_generated_headers: ["android.hardware.tests.versioning@2.2_genc++_headers"],
-    vendor_available: true,
-    shared_libs: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "liblog",
-        "libutils",
-        "libcutils",
-    ],
-    export_shared_lib_headers: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-    ],
-}
diff --git a/tests/versioning/2.2/Android.mk b/tests/versioning/2.2/Android.mk
deleted file mode 100644
index 4fccce6..0000000
--- a/tests/versioning/2.2/Android.mk
+++ /dev/null
@@ -1,114 +0,0 @@
-# This file is autogenerated by hidl-gen. Do not edit manually.
-
-LOCAL_PATH := $(call my-dir)
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V2.2-java
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_JAVA_LIBRARIES := \
-    android.hidl.base-V1.0-java \
-
-
-#
-# Build IBar.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IBar.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.2::IBar
-
-$(GEN): $(LOCAL_PATH)/IBar.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.2::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_JAVA_LIBRARY)
-
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V2.2-java-static
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    android.hidl.base-V1.0-java-static \
-
-
-#
-# Build IBar.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IBar.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.2::IBar
-
-$(GEN): $(LOCAL_PATH)/IBar.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_2/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.2::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/2.2/IBar.hal b/tests/versioning/2.2/IBar.hal
deleted file mode 100644
index e28ce19..0000000
--- a/tests/versioning/2.2/IBar.hal
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@2.2;
-
-interface IBar {
-
-};
diff --git a/tests/versioning/2.2/IFoo.hal b/tests/versioning/2.2/IFoo.hal
deleted file mode 100644
index d6b8782..0000000
--- a/tests/versioning/2.2/IFoo.hal
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@2.2;
-
-interface IFoo {
-
-};
diff --git a/tests/versioning/2.3/Android.bp b/tests/versioning/2.3/Android.bp
deleted file mode 100644
index 65e1193..0000000
--- a/tests/versioning/2.3/Android.bp
+++ /dev/null
@@ -1,77 +0,0 @@
-// This file is autogenerated by hidl-gen. Do not edit manually.
-
-filegroup {
-    name: "android.hardware.tests.versioning@2.3_hal",
-    srcs: [
-        "IBar.hal",
-        "IBaz.hal",
-        "IFoo.hal",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@2.3_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.3",
-    srcs: [
-        ":android.hardware.tests.versioning@2.3_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/2.3/BarAll.cpp",
-        "android/hardware/tests/versioning/2.3/BazAll.cpp",
-        "android/hardware/tests/versioning/2.3/FooAll.cpp",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@2.3_genc++_headers",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.3",
-    srcs: [
-        ":android.hardware.tests.versioning@2.3_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/2.3/IBar.h",
-        "android/hardware/tests/versioning/2.3/IHwBar.h",
-        "android/hardware/tests/versioning/2.3/BnHwBar.h",
-        "android/hardware/tests/versioning/2.3/BpHwBar.h",
-        "android/hardware/tests/versioning/2.3/BsBar.h",
-        "android/hardware/tests/versioning/2.3/IBaz.h",
-        "android/hardware/tests/versioning/2.3/IHwBaz.h",
-        "android/hardware/tests/versioning/2.3/BnHwBaz.h",
-        "android/hardware/tests/versioning/2.3/BpHwBaz.h",
-        "android/hardware/tests/versioning/2.3/BsBaz.h",
-        "android/hardware/tests/versioning/2.3/IFoo.h",
-        "android/hardware/tests/versioning/2.3/IHwFoo.h",
-        "android/hardware/tests/versioning/2.3/BnHwFoo.h",
-        "android/hardware/tests/versioning/2.3/BpHwFoo.h",
-        "android/hardware/tests/versioning/2.3/BsFoo.h",
-    ],
-}
-
-cc_library_shared {
-    name: "android.hardware.tests.versioning@2.3",
-    defaults: ["hidl-module-defaults"],
-    generated_sources: ["android.hardware.tests.versioning@2.3_genc++"],
-    generated_headers: ["android.hardware.tests.versioning@2.3_genc++_headers"],
-    export_generated_headers: ["android.hardware.tests.versioning@2.3_genc++_headers"],
-    vendor_available: true,
-    shared_libs: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "liblog",
-        "libutils",
-        "libcutils",
-        "android.hardware.tests.versioning@1.0",
-        "android.hardware.tests.versioning@2.2",
-    ],
-    export_shared_lib_headers: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-        "android.hardware.tests.versioning@1.0",
-        "android.hardware.tests.versioning@2.2",
-    ],
-}
diff --git a/tests/versioning/2.3/Android.mk b/tests/versioning/2.3/Android.mk
deleted file mode 100644
index 36326d6..0000000
--- a/tests/versioning/2.3/Android.mk
+++ /dev/null
@@ -1,156 +0,0 @@
-# This file is autogenerated by hidl-gen. Do not edit manually.
-
-LOCAL_PATH := $(call my-dir)
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V2.3-java
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_JAVA_LIBRARIES := \
-    android.hardware.tests.versioning-V1.0-java \
-    android.hardware.tests.versioning-V2.2-java \
-    android.hidl.base-V1.0-java \
-
-
-#
-# Build IBar.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IBar.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.3::IBar
-
-$(GEN): $(LOCAL_PATH)/IBar.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build IBaz.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IBaz.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBaz.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.3::IBaz
-
-$(GEN): $(LOCAL_PATH)/IBaz.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.3::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_JAVA_LIBRARY)
-
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V2.3-java-static
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    android.hardware.tests.versioning-V1.0-java-static \
-    android.hardware.tests.versioning-V2.2-java-static \
-    android.hidl.base-V1.0-java-static \
-
-
-#
-# Build IBar.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IBar.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBar.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.3::IBar
-
-$(GEN): $(LOCAL_PATH)/IBar.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build IBaz.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IBaz.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IBaz.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.3::IBaz
-
-$(GEN): $(LOCAL_PATH)/IBaz.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_3/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.3::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/2.3/IBar.hal b/tests/versioning/2.3/IBar.hal
deleted file mode 100644
index fe38e76..0000000
--- a/tests/versioning/2.3/IBar.hal
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@2.3;
-
-import @2.2::IBar;
-
-// Must extend @2.2::IBar.
-interface IBar extends @2.2::IBar {
-
-};
diff --git a/tests/versioning/2.3/IBaz.hal b/tests/versioning/2.3/IBaz.hal
deleted file mode 100644
index e28792c..0000000
--- a/tests/versioning/2.3/IBaz.hal
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@2.3;
-
-import @1.0::IFoo;
-
-interface IBaz extends @1.0::IFoo {
-
-};
diff --git a/tests/versioning/2.3/IFoo.hal b/tests/versioning/2.3/IFoo.hal
deleted file mode 100644
index 2c76500..0000000
--- a/tests/versioning/2.3/IFoo.hal
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@2.3;
-
-import @2.2::IFoo;
-
-// Must extend @2.2::IFoo.
-interface IFoo extends @2.2::IFoo {
-
-};
diff --git a/tests/versioning/2.4/Android.bp b/tests/versioning/2.4/Android.bp
deleted file mode 100644
index d236a18..0000000
--- a/tests/versioning/2.4/Android.bp
+++ /dev/null
@@ -1,63 +0,0 @@
-// This file is autogenerated by hidl-gen. Do not edit manually.
-
-filegroup {
-    name: "android.hardware.tests.versioning@2.4_hal",
-    srcs: [
-        "IFoo.hal",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@2.4_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.4",
-    srcs: [
-        ":android.hardware.tests.versioning@2.4_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/2.4/FooAll.cpp",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.versioning@2.4_genc++_headers",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.4",
-    srcs: [
-        ":android.hardware.tests.versioning@2.4_hal",
-    ],
-    out: [
-        "android/hardware/tests/versioning/2.4/IFoo.h",
-        "android/hardware/tests/versioning/2.4/IHwFoo.h",
-        "android/hardware/tests/versioning/2.4/BnHwFoo.h",
-        "android/hardware/tests/versioning/2.4/BpHwFoo.h",
-        "android/hardware/tests/versioning/2.4/BsFoo.h",
-    ],
-}
-
-cc_library_shared {
-    name: "android.hardware.tests.versioning@2.4",
-    defaults: ["hidl-module-defaults"],
-    generated_sources: ["android.hardware.tests.versioning@2.4_genc++"],
-    generated_headers: ["android.hardware.tests.versioning@2.4_genc++_headers"],
-    export_generated_headers: ["android.hardware.tests.versioning@2.4_genc++_headers"],
-    vendor_available: true,
-    shared_libs: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "liblog",
-        "libutils",
-        "libcutils",
-        "android.hardware.tests.versioning@2.2",
-        "android.hardware.tests.versioning@2.3",
-    ],
-    export_shared_lib_headers: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-        "android.hardware.tests.versioning@2.2",
-        "android.hardware.tests.versioning@2.3",
-    ],
-}
diff --git a/tests/versioning/2.4/Android.mk b/tests/versioning/2.4/Android.mk
deleted file mode 100644
index c716172..0000000
--- a/tests/versioning/2.4/Android.mk
+++ /dev/null
@@ -1,80 +0,0 @@
-# This file is autogenerated by hidl-gen. Do not edit manually.
-
-LOCAL_PATH := $(call my-dir)
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V2.4-java
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_JAVA_LIBRARIES := \
-    android.hardware.tests.versioning-V2.2-java \
-    android.hardware.tests.versioning-V2.3-java \
-    android.hidl.base-V1.0-java \
-
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_4/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.4::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_JAVA_LIBRARY)
-
-
-################################################################################
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.tests.versioning-V2.4-java-static
-LOCAL_MODULE_CLASS := JAVA_LIBRARIES
-
-intermediates := $(call local-generated-sources-dir, COMMON)
-
-HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
-
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    android.hardware.tests.versioning-V2.2-java-static \
-    android.hardware.tests.versioning-V2.3-java-static \
-    android.hidl.base-V1.0-java-static \
-
-
-#
-# Build IFoo.hal
-#
-GEN := $(intermediates)/android/hardware/tests/versioning/V2_4/IFoo.java
-$(GEN): $(HIDL)
-$(GEN): PRIVATE_HIDL := $(HIDL)
-$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
-$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
-$(GEN): PRIVATE_CUSTOM_TOOL = \
-        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
-        -Ljava \
-        -randroid.hardware:hardware/interfaces \
-        -randroid.hidl:system/libhidl/transport \
-        android.hardware.tests.versioning@2.4::IFoo
-
-$(GEN): $(LOCAL_PATH)/IFoo.hal
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/2.4/IFoo.hal b/tests/versioning/2.4/IFoo.hal
deleted file mode 100644
index 358b56f..0000000
--- a/tests/versioning/2.4/IFoo.hal
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.tests.versioning@2.4;
-
-import @2.3::IFoo;
-
-// Must extend @2.3::IFoo.
-interface IFoo extends @2.3::IFoo {
-
-};