docstr: Get all Experiment IDs
  
  :param username: to get experiments for a specific user
  :type username: str
  :return: Experiment IDs
  :rtype: list(int)
docstr_tok: ["Get","all","Experiment","IDs",":","param","username",":","to","get","experiments","for","a","specific","user",":","type","username",":","str",":","return",":","Experiment","IDs",":","rtype",":","list","(","int",")"]
code: def get_all_experiment(self, username=None):
      """
      Get all Experiment IDs
  
      :param username: to get experiments for a specific user
      :type username: str
      :return: Experiment IDs
      :rtype: list(int)
      """
      raise NotImplementedError
  
imports: import abc
  import logging
label_desc: Use image node_id 11 for calling the AbstractConnector obj's underlying member method code with example usage: obj.get_all_experiment(username) without return types