Override close file from H5Writer

lib/src/BufferedWriter.cpp

@@ -25,6 +25,17 @@ void BufferedWriter::write_metadata(string name, uint64_t frame_index, const cha
     metadata_buffer->add_metadata_to_buffer(name, relative_frame_index, data);
 }
 
+void BufferedWriter::write_metadata_to_file()
+{
+
+}
+
+void BufferedWriter::close_file() 
+{
+    write_metadata_to_file();
+    H5Writer::close_file();
+}
+
 DummyBufferedWriter::DummyBufferedWriter() : BufferedWriter("/dev/null", 0, 0, 0, 0){}
 
 std::unique_ptr<BufferedWriter> get_buffered_writer(const string& filename, size_t total_frames, 

lib/src/BufferedWriter.hpp

@@ -9,10 +9,13 @@ class BufferedWriter : public H5Writer
     size_t total_frames;
     std::unique_ptr<MetadataBuffer> metadata_buffer;
 
+    void write_metadata_to_file();
+
     public:
         BufferedWriter(const std::string& filename, size_t total_frames, std::unique_ptr<MetadataBuffer>&& metadata_buffer, 
             hsize_t frames_per_file=0, hsize_t initial_dataset_size=1000, hsize_t dataset_increase_step=1000);
         void write_metadata(std::string name, uint64_t frame_index, const char* data);
+        virtual void close_file() override;
 };
 
 class DummyBufferedWriter : public BufferedWriter