sample: update auto-generated monster_generated.h (#4219)

Signed-off-by: Koichi Shiraishi <zchee.io@gmail.com>

samples/monster_generated.h

@@ -224,6 +224,10 @@ struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
   const void *equipped() const {
     return GetPointer<const void *>(VT_EQUIPPED);
   }
+  template<typename T> const T *equipped_as() const;
+  const Weapon *equipped_as_Weapon() const {
+    return (equipped_type() == Equipment_Weapon)? static_cast<const Weapon *>(equipped()) : nullptr;
+  }
   void *mutable_equipped() {
     return GetPointer<void *>(VT_EQUIPPED);
   }
@@ -250,6 +254,10 @@ struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
   static flatbuffers::Offset<Monster> Pack(flatbuffers::FlatBufferBuilder &_fbb, const MonsterT* _o, const flatbuffers::rehasher_function_t *_rehasher = nullptr);
 };
 
+template<> inline const Weapon *Monster::equipped_as<Weapon>() const {
+  return equipped_as_Weapon();
+}
+
 struct MonsterBuilder {
   flatbuffers::FlatBufferBuilder &fbb_;
   flatbuffers::uoffset_t start_;