diff --git a/src/google/protobuf/empty.pb.h b/src/google/protobuf/empty.pb.h
new file mode 100644
index 0000000..868009f
--- /dev/null
+++ b/src/google/protobuf/empty.pb.h
@@ -0,0 +1,143 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/protobuf/empty.proto
+
+#ifndef PROTOBUF_google_2fprotobuf_2fempty_2eproto__INCLUDED
+#define PROTOBUF_google_2fprotobuf_2fempty_2eproto__INCLUDED
+
+#include <string>
+
+#include <google/protobuf/stubs/common.h>
+
+#if GOOGLE_PROTOBUF_VERSION < 3000000
+#error This file was generated by a newer version of protoc which is
+#error incompatible with your Protocol Buffer headers.  Please update
+#error your headers.
+#endif
+#if 3000000 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
+#error This file was generated by an older version of protoc which is
+#error incompatible with your Protocol Buffer headers.  Please
+#error regenerate this file with a newer version of protoc.
+#endif
+
+#include <google/protobuf/arena.h>
+#include <google/protobuf/arenastring.h>
+#include <google/protobuf/generated_message_util.h>
+#include <google/protobuf/metadata.h>
+#include <google/protobuf/message.h>
+#include <google/protobuf/repeated_field.h>
+#include <google/protobuf/extension_set.h>
+#include <google/protobuf/unknown_field_set.h>
+// @@protoc_insertion_point(includes)
+
+namespace google {
+namespace protobuf {
+
+// Internal implementation detail -- do not call these.
+void LIBPROTOBUF_EXPORT protobuf_AddDesc_google_2fprotobuf_2fempty_2eproto();
+void protobuf_AssignDesc_google_2fprotobuf_2fempty_2eproto();
+void protobuf_ShutdownFile_google_2fprotobuf_2fempty_2eproto();
+
+class Empty;
+
+// ===================================================================
+
+class LIBPROTOBUF_EXPORT Empty : public ::google::protobuf::Message {
+ public:
+  Empty();
+  virtual ~Empty();
+
+  Empty(const Empty& from);
+
+  inline Empty& operator=(const Empty& from) {
+    CopyFrom(from);
+    return *this;
+  }
+
+  inline ::google::protobuf::Arena* GetArena() const { return GetArenaNoVirtual(); }
+  inline void* GetMaybeArenaPointer() const {
+    return MaybeArenaPtr();
+  }
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const Empty& default_instance();
+
+  void UnsafeArenaSwap(Empty* other);
+  void Swap(Empty* other);
+
+  // implements Message ----------------------------------------------
+
+  inline Empty* New() const { return New(NULL); }
+
+  Empty* New(::google::protobuf::Arena* arena) const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const Empty& from);
+  void MergeFrom(const Empty& from);
+  void Clear();
+  bool IsInitialized() const;
+
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  void InternalSwap(Empty* other);
+  protected:
+  explicit Empty(::google::protobuf::Arena* arena);
+  private:
+  static void ArenaDtor(void* object);
+  inline void RegisterArenaDtor(::google::protobuf::Arena* arena);
+  private:
+  inline ::google::protobuf::Arena* GetArenaNoVirtual() const {
+    return _internal_metadata_.arena();
+  }
+  inline void* MaybeArenaPtr() const {
+    return _internal_metadata_.raw_arena_ptr();
+  }
+  public:
+
+  ::google::protobuf::Metadata GetMetadata() const;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // @@protoc_insertion_point(class_scope:google.protobuf.Empty)
+ private:
+
+  ::google::protobuf::internal::InternalMetadataWithArena _internal_metadata_;
+  friend class ::google::protobuf::Arena;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  bool _is_default_instance_;
+  mutable int _cached_size_;
+  friend void LIBPROTOBUF_EXPORT protobuf_AddDesc_google_2fprotobuf_2fempty_2eproto();
+  friend void protobuf_AssignDesc_google_2fprotobuf_2fempty_2eproto();
+  friend void protobuf_ShutdownFile_google_2fprotobuf_2fempty_2eproto();
+
+  void InitAsDefaultInstance();
+  static Empty* default_instance_;
+};
+// ===================================================================
+
+
+// ===================================================================
+
+#if !PROTOBUF_INLINE_NOT_IN_HEADERS
+// Empty
+
+#endif  // !PROTOBUF_INLINE_NOT_IN_HEADERS
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace protobuf
+}  // namespace google
+
+// @@protoc_insertion_point(global_scope)
+
+#endif  // PROTOBUF_google_2fprotobuf_2fempty_2eproto__INCLUDED