Retrieves the human-readable description of an LRR event.

    :param event_type: Base LRR event type.  Use LRR_EVENT_TYPE.*
    :type event_type: int
    :param event_code: LRR event code
    :type event_code: int

    :returns: string

def get_event_description(event_type, event_code):
    """
    Retrieves the human-readable description of an LRR event.

    :param event_type: Base LRR event type.  Use LRR_EVENT_TYPE.*
    :type event_type: int
    :param event_code: LRR event code
    :type event_code: int

    :returns: string
    """
    description = 'Unknown'
    lookup_map = LRR_TYPE_MAP.get(event_type, None)

    if lookup_map is not None:
        description = lookup_map.get(event_code, description)

    return description