class Aws::S3::FileDownloader

def construct_chunks(file_size)
  offset = 0
  default_chunk_size = compute_chunk(file_size)
  chunks = []
  while offset <= file_size
    progress = offset + default_chunk_size
    chunks << "bytes=#{offset}-#{progress < file_size ? progress : file_size}"
    offset = progress + 1
  end
  chunks
end