'Initialise a new Event identifier based on components.
The identifier is based on the identifier components of
the associated resource and the event ID.'

def __init__(self, tenant, stack_name, stack_id, path, event_id=None):

    if (event_id is not None):
        path = '/'.join([path.rstrip('/'), 'events', event_id])
    super(EventIdentifier, self).__init__(tenant, stack_name, stack_id, path)
