def METHOD_NAME(
    cls,
    branch: str = None,
    project_event_identifier: Optional[str] = None,
    identifier: Optional[str] = None,
) -> str:
    """
    Get name of the commit status for propose-downstream job for the given branch
    and identifier.
    """
    branch_str = f":{branch}" if branch else ""
    trigger_str = f":{project_event_identifier}" if project_event_identifier else ""
    optional_suffix = f":{identifier}" if identifier else ""
    return f"{cls.status_name}{trigger_str}{branch_str}{optional_suffix}"