docs: def _generate_standard_methods(cls):
          """Generate standard setters, getters and checkers."""
          for state in cls.context.states_enum:
              getter_name = 'is_{name}'.format(name=state.value)
              cls.context.new_methods[getter_name] = utils.generate_getter(state)
  
              setter_name = 'set_{name}'.format(name=state.value)
              cls.context.new_methods[setter_name] = utils.generate_setter(state)
  
              checker_name = 'can_be_{name}'.format(name=state.value)
              checker = utils.generate_checker(state)
              cls.context.new_methods[checker_name] = checker
  
          cls.context.new_methods['actual_state'] = utils.actual_state
          cls.context.new_methods['as_enum'] = utils.as_enum
          cls.context.new_methods['force_set'] = utils.force_set