diff --git a/ServiceManager.h b/ServiceManager.h
index 0fc856e..f358cfe 100644
--- a/ServiceManager.h
+++ b/ServiceManager.h
@@ -31,29 +31,39 @@
                      const hidl_string& name,
                      const sp<IBinder>& service) override;
 
+    Return<void> list(list_cb _hidl_cb) override;
+    Return<void> listByInterface(const hidl_string& fqName,
+                                 listByInterface_cb _hidl_cb) override;
+
     struct HidlService {
-        HidlService(const std::string &iface,
+        HidlService(const std::string &package,
+                    const std::string &interface,
                     const std::string &name,
                     const hidl_version &version,
                     const sp<IBinder> &service);
 
         sp<IBinder> getService() const;
         void setService(sp<IBinder> service);
-        const std::string &getIface() const;
+        const std::string &getPackage() const;
+        const std::string &getInterface() const;
         const std::string &getName() const;
         const hidl_version &getVersion() const;
 
         bool supportsVersion(const hidl_version &version) const;
 
+        std::string iface() const; // e.x. "android.hidl.manager::IServiceManager"
+        std::string string() const; // e.x. "android.hidl.manager@1.0::IServiceManager/manager"
+
         static std::unique_ptr<HidlService> make(
             const std::string &fqName,
             const std::string &name,
             const sp<IBinder>& service = nullptr);
 
     private:
-        const std::string                     mIface;   // e.x. "android.hidl.manager::IServiceManager"
-        const std::string                     mName;    // e.x. "manager"
-        const hidl_version                    mVersion; // e.x. { 1, 0 }
+        const std::string                     mPackage;  // e.x. "android.hidl.manager"
+        const std::string                     mInterface; // e.x. "IServiceManager"
+        const std::string                     mName;     // e.x. "manager"
+        const hidl_version                    mVersion;  // e.x. { 1, 0 }
         sp<IBinder>                           mService;
     };