'Returns sfc resource path.'

def _resolve_resource_path(self, resource):

    if (resource == 'port_pair'):
        path = '/sfc/port_pairs'
    elif (resource == 'port_pair_group'):
        path = '/sfc/port_pair_groups'
    elif (resource == 'flow_classifier'):
        path = '/sfc/flow_classifiers'
    elif (resource == 'port_chain'):
        path = '/sfc/port_chains'
    return path
