def _get_yaml_path(path, parameter):
    """Compose the parameter path following the YAML Path standard.

    Standard: https://github.com/wwkimball/yamlpath/wiki/Segments-of-a-YAML-Path#yaml-path-standard
    """
    yaml_path = []
    if path:
        yaml_path.extend(path)
    if parameter:
        yaml_path.append(parameter)
    return ".".join(yaml_path)