parameters: (self, class_name)
docstring: Initialize IsA
  
      Args:
        class_name: basic python type or a class
docstring_summary: Initialize IsA
docstring_tokens: Initialize IsA
function: def __init__(self, class_name):
      """Initialize IsA
  
      Args:
        class_name: basic python type or a class
      """
  
      self._class_name = class_name
function_tokens: def __init__ ( self , class_name ) : self . _class_name = class_name