diff --git a/gnss/2.0/IGnss.hal b/gnss/2.0/IGnss.hal
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+/*
+ * Copyright (C) 2018 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.gnss@2.0;
+
+import @1.1::IGnss;
+
+import IGnssMeasurement;
+
+/** Represents the standard GNSS (Global Navigation Satellite System) interface. */
+interface IGnss extends @1.1::IGnss {
+    /**
+     * This method returns the IGnssMeasurement interface.
+     *
+     * Exactly one of getExtensionGnssMeasurement_1_1() and getExtensionGnssMeasurement_2_0() must
+     * return a non-null handle, and the other method must return nullptr.
+     *
+     * @return gnssMeasurementIface Handle to the IGnssMeasurement interface.
+     */
+    getExtensionGnssMeasurement_2_0() generates (IGnssMeasurement gnssMeasurementIface);
+};
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