docs: def write_bibtex_dict(stream, entries):
      """bibtexparser.write converts the entire database to one big string and
      writes it out in one go. I'm sure it will always all fit in RAM but some
      things just will not stand.
  
      """
      from bibtexparser.bwriter import BibTexWriter
  
      writer = BibTexWriter()
      writer.indent = '  '
      writer.entry_separator = ''
      first = True
  
      for rec in entries:
          if first:
              first = False
          else:
              stream.write(b'\n')
          stream.write(writer._entry_to_bibtex(rec).encode('utf8'))