code: def _BuildFindSpecsFromGroupName(self, group_name, environment_variables):
      
      definition = self._artifacts_registry.GetDefinitionByName(group_name)
      if not definition:
        return None
  
      return self._BuildFindSpecsFromArtifact(definition, environment_variables)
docs: Builds find specifications from a artifact group name.
  
      Args:
        group_name (str): artifact group name.
        environment_variables (list[str]): environment variable attributes used to
            dynamically populate environment variables in file and registry
            artifacts.
  
      Returns:
        list[dfwinreg.FindSpec|dfvfs.FindSpec]: find specifications or None if no
            artifact with the given name can be retrieved.