docs: def _create_get_request(self, resource, billomat_id='', command=None, params=None):
          """
          Creates a get request and return the response data
          """
          if not params:
              params = {}
  
          if not command:
              command = ''
          else:
              command = '/' + command
  
          assert (isinstance(resource, str))
          if billomat_id:
              assert (isinstance(billomat_id, int) or isinstance(billomat_id, str))
  
              if isinstance(billomat_id, int):
                  billomat_id = str(billomat_id)
          response = self.session.get(
              url=self.api_url + resource + ('/' + billomat_id if billomat_id else '') + command,
              params=params,
          )
  
          return self._handle_response(response)