code: def rpc_get_all_names_cumulative( self, offset, count, **con_info ):
          
          if not check_offset(offset):
              return {'error': 'invalid offset', 'http_status': 400}
  
          if not check_count(count, 100):
              return {'error': 'invalid count', 'http_status': 400}
  
          db = get_db_state(self.working_dir)
          all_names = db.get_all_names( offset=offset, count=count, include_expired=True )
          db.close()
  
          return self.success_response( {'names': all_names} )
docs: Get all names that have ever existed, paginated
          Return {'status': true, 'names': [...]} on success
          Return {'error': ...} on error