How to generate spool in SAP ABAP on Cloud?

Hi,
I americium calling my customized fragment-based adobe signifier utilizing the class cl_somu_form_services method get_document which returns the XSTRING. I request to make spool but could not find a mode to execute it.

With interface-based Adobe forms, it was precise simple. Is determination a mode to make spool successful unreality development?

Thanks,
Sachin