async def post(self,body: CreateSessionPostRequestBody, request_configuration: Optional[RequestConfiguration[QueryParameters]] = None) -> Optional[WorkbookSessionInfo]:
        """
        Create a new workbook session.  Excel APIs can be called in one of two modes:  To represent the session in the API, use the workbook-session-id: {session-id} header.  In some cases, creating a new session requires an indeterminate time to complete. Microsoft Graph also provides a long running operations pattern. This pattern provides a way to poll for creation status updates, without waiting for the creation to complete. The following are the steps:
        param body: The request body
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[WorkbookSessionInfo]
        Find more info here: https://learn.microsoft.com/graph/api/workbook-createsession?view=graph-rest-1.0
        """
        if body is None:
            raise TypeError("body cannot be null.")
        request_info = self.to_post_request_information(
            body, 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.workbook_session_info import WorkbookSessionInfo

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

        Create a new workbook session.  Excel APIs can be called in one of two modes:  To represent the session in the API, use the workbook-session-id: {session-id} header.  In some cases, creating a new session requires an indeterminate time to complete. Microsoft Graph also provides a long running operations pattern. This pattern provides a way to poll for creation status updates, without waiting for the creation to complete. The following are the steps:
        param body: The request body
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[WorkbookSessionInfo]
        Find more info here: https://learn.microsoft.com/graph/api/workbook-createsession?view=graph-rest-1.0
        
msgraph/generated/drives/item/items/item/workbook/create_session/create_session_request_builder.py