class_docstr: Special singleton class used to represent generic DataSets and Columns.
      
class_docstr_tok: ["Special","singleton","class","used","to","represent","generic","DataSets","and","Columns","."]
code: def __repr__(self):
      return "GENERIC"
  
imports: import datetime
  from textwrap import dedent
  from interface import default, implements, Interface
  import numpy
  import pandas
  import pytz
  from trading_calendars import get_calendar
  from zipline.country import CountryCode
  from zipline.utils.formatting import bulleted_list
  from zipline.utils.input_validation import expect_types, optional
  from zipline.utils.memoize import lazyval
  from zipline.utils.pandas_utils import days_at_time
label_desc: Use image node_id 4 for calling the GenericDomain obj's underlying member method code with example usage: obj.__repr__() and returns: str