public BgpSpeakerConfig getSpeakerFromPeer(IpAddress peerAddress) {
        for (BgpConfig.BgpSpeakerConfig speaker : bgpSpeakers()) {
            if (speaker.peers().contains(peerAddress)) {
                return speaker;
            }
        }
        return null;
    }
@Test
    public void testGetSpeakerFromPeer() throws Exception {
        assertNotNull(bgpConfig.getSpeakerFromPeer(IP1));
        assertNull(bgpConfig.getSpeakerFromPeer(IP_NON_EXIST));
    }