<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _check_is_chained_assignment_possible(self):
 """ Check if we are a view, have a cacher, and are of mixed type. If so, then force a setitem_copy check. Should be called just near setting a value Will return a boolean if it we are a view and are cached, but a single-dtype meaning that the cacher should be updated following setting. """

        if self._is_view and self._is_cached:
            ref = self._get_cacher()
            if ref is not None and ref._is_mixed_type:
                self._check_setitem_copy(stacklevel=4, t='referant',
                                         force=True)
            return True
        elif self._is_copy:
            self._check_setitem_copy(stacklevel=4, t='referant')
        return False