async def get(self,request_configuration: Optional[RequestConfiguration[ApprovalStageItemRequestBuilderGetQueryParameters]] = None) -> Optional[ApprovalStage]:
        """
        A collection of stages in the approval decision.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[ApprovalStage]
        """
        request_info = self.to_get_request_information(
            request_configuration
        )
        from ..........models.o_data_errors.o_data_error import ODataError

        error_mapping: dict[str, type[ParsableFactory]] = {
            "XXX": ODataError,
        }
        if not self.request_adapter:
            raise Exception("Http core is null") 
        from ..........models.approval_stage import ApprovalStage

        return await self.request_adapter.send_async(request_info, ApprovalStage, error_mapping)

        A collection of stages in the approval decision.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[ApprovalStage]
        
msgraph/generated/identity_governance/app_consent/app_consent_requests/item/user_consent_requests/item/approval/stages/item/approval_stage_item_request_builder.py