def by_protection_policy_base_id(self,protection_policy_base_id: str) -> ProtectionPolicyBaseItemRequestBuilder:
        """
        Provides operations to manage the protectionPolicies property of the microsoft.graph.backupRestoreRoot entity.
        param protection_policy_base_id: The unique identifier of protectionPolicyBase
        Returns: ProtectionPolicyBaseItemRequestBuilder
        """
        if protection_policy_base_id is None:
            raise TypeError("protection_policy_base_id cannot be null.")
        from .item.protection_policy_base_item_request_builder import ProtectionPolicyBaseItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["protectionPolicyBase%2Did"] = protection_policy_base_id
        return ProtectionPolicyBaseItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the protectionPolicies property of the microsoft.graph.backupRestoreRoot entity.
        param protection_policy_base_id: The unique identifier of protectionPolicyBase
        Returns: ProtectionPolicyBaseItemRequestBuilder
        
msgraph/generated/solutions/backup_restore/protection_policies/protection_policies_request_builder.py