def by_ediscovery_review_tag_id1(self,ediscovery_review_tag_id1: str) -> EdiscoveryReviewTagItemRequestBuilder:
        """
        Provides operations to manage the childTags property of the microsoft.graph.security.ediscoveryReviewTag entity.
        param ediscovery_review_tag_id1: The unique identifier of ediscoveryReviewTag
        Returns: EdiscoveryReviewTagItemRequestBuilder
        """
        if ediscovery_review_tag_id1 is None:
            raise TypeError("ediscovery_review_tag_id1 cannot be null.")
        from .item.ediscovery_review_tag_item_request_builder import EdiscoveryReviewTagItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["ediscoveryReviewTag%2Did1"] = ediscovery_review_tag_id1
        return EdiscoveryReviewTagItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the childTags property of the microsoft.graph.security.ediscoveryReviewTag entity.
        param ediscovery_review_tag_id1: The unique identifier of ediscoveryReviewTag
        Returns: EdiscoveryReviewTagItemRequestBuilder
        
msgraph/generated/security/cases/ediscovery_cases/item/tags/item/child_tags/child_tags_request_builder.py