docs: def clear_file(self, label):
          """stub"""
          rm = self.my_osid_object_form._get_provider_manager('REPOSITORY')
  
          catalog_id_str = ''
  
          if 'assignedBankIds' in self.my_osid_object_form._my_map:
              catalog_id_str = self.my_osid_object_form._my_map['assignedBankIds'][0]
          elif 'assignedRepositoryIds' in self.my_osid_object_form._my_map:
              catalog_id_str = self.my_osid_object_form._my_map['assignedRepositoryIds'][0]
          try:
              try:
                  aas = rm.get_asset_admin_session_for_repository(
                      Id(catalog_id_str),
                      self.my_osid_object_form._proxy)
              except NullArgument:
                  aas = rm.get_asset_admin_session_for_repository(
                      Id(catalog_id_str))
          except AttributeError:
              # for update forms
              try:
                  aas = rm.get_asset_admin_session_for_repository(
                      Id(catalog_id_str),
                      self.my_osid_object_form._proxy)
              except NullArgument:
                  aas = rm.get_asset_admin_session_for_repository(
                      Id(catalog_id_str))
  
          if label not in self.my_osid_object_form._my_map['fileIds']:
              raise NotFound()
          aas.delete_asset(Id(self.my_osid_object_form._my_map['fileIds'][label]['assetId']))
          del self.my_osid_object_form._my_map['fileIds'][label]