new_contents: # -*- coding: utf-8 -*-
  #
  # Copyright (c) 2014-2015, Ghislain Antony Vaillant
  # All rights reserved.
  #
  # This file is distributed under the BSD License, see the LICENSE file or
  # checkout the license terms at http://opensource.org/licenses/BSD-2-Clause).
  
  from __future__ import absolute_import, division, print_function
  
  
  def make_header(*args, **kwargs):
      pass
  
  def make_dtype(header):
      pass
  
  def make_object(header, *args, **kwargs):
      pass
  
  def frombytes(bytestring):
      pass
  
  def set_flags(header, flags=None):
      pass
  
  def clear_flags(header, flags=None):
      pass
  
  def is_flag_set(header, flag):
      pass
  
  def _verify_flags(flags):
      pass
  
  def set_channels(header, channels=None):
      pass
  
  def clear_channels(header, channels=None):
      pass
  
  def is_channel_set(header, channel):
      pass
  
  def _verify_channels(flags):
      pass    
subject: add low-level api for acquisition