class LinkMap:

    links = []
    link_connections = [
        # (link1, link2)
    ]

    def add_link_connection(self, link1, link2):
        if not link1 in self.links:
            self.links.append(link1)
        if not link2 in self.links:
            self.links.append(link2)
        self.link_connections.append((link1, link2))
    
    def add_link(self, link):
        if not link in self.links:
            self.links.append(link)