code: def _get_data(self, required_for, section=b'data'):
          
          line = self.next_line()
          if line.startswith(b'data '):
              rest = line[len(b'data '):]
              if rest.startswith(b'<<'):
                  return self.read_until(rest[2:])
              else:
                  size = int(rest)
                  read_bytes = self.read_bytes(size)
                  # optional LF after data.
                  next_line = self.input.readline()
                  self.lineno += 1
                  if len(next_line) > 1 or next_line != b'\n':
                      self.push_line(next_line[:-1])
                  return read_bytes
          else:
              self.abort(errors.MissingSection, required_for, section)
docs: Parse a data section.