def METHOD_NAME(event, prop):
    """Retrieve properties from fund or lab, if present.
                     ┌─────┐
                     │Fund │
                     └─────┘
        event.source    │
                  ┌─────┼────────────┐
                  │  ┌──▼──┐ ┌─────┐ │
                  │  │Round│ │ Lab │ │
                  │  └──┬──┘ └┬────┘ │
                  └─────┼─────┼──────┘
                        └──┬──┘
                           │
                           ▼
    Args:
        event: Event ModelClass instance
    Returns:
        An array of emails or empty list.
    """
    if hasattr(event.source, "get_from_parent"):
        if event.source.round:
            # Get attribute from the parent of round
            fund = event.source.round.get_parent()
            return getattr(fund.specific, prop)
        # extract from the lab
        return event.source.get_from_parent(prop)
    return None