<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def rebuild_indexes(self, chunk_size=1000, aggressive_clear=False, index_class=None):
 """Rebuild all indexes tied to this field Parameters chunk_size: int Default to 1000, it's the number of instances to load at once. aggressive_clear: bool Will be passed to the `aggressive` argument of the `clear_indexes` method. If `False`, all values will be normally deindexed. If `True`, the work will be done at low level, scanning for keys that may match the ones used by the indexes index_class: type Allow to build only index(es) for this index class instead of all indexes. Raises ------ AssertionError If called from an instance field. It must be called from the model field Also raised if the field is not indexable Examples -------- """

        assert self.indexable, "Field not indexable"
        assert self.attached_to_model, \
            '`rebuild_indexes` can only be called on a field attached to the model'

        for index in self._indexes:
            if index_class and not isinstance(index, index_class):
                continue
            index.rebuild(chunk_size=chunk_size, aggressive_clear=aggressive_clear)