import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;

public class BufferedFileAccessor extends AbstractFileAccessor {
    private final int bufferSize;

    public BufferedFileAccessor(int bufferSizeInKBytes, DirectoryProvider directoryProvider) {
        super(directoryProvider);
        this.bufferSize = bufferSizeInKBytes * 1024;
    }

        .put("direct", new DirectFileFileAccessor(DIRECTORY_PROVIDER))
        .put("buffered", new BufferedFileAccessor(8, DIRECTORY_PROVIDER))
        .put("buffered.small", new BufferedFileAccessor(2, DIRECTORY_PROVIDER))
        .put("buffered.large", new BufferedFileAccessor(64, DIRECTORY_PROVIDER))
        .put("in-memory", new InMemoryDataAccessor())
        .build();

    DataSource sample;