def METHOD_NAME(self, version):
    if version <= Version("4.1.4"):
        url = "http://download.zeromq.org/zeromq-{0}.tar.gz"
    else:
        url = "https://github.com/zeromq/libzmq/releases/download/v{0}/zeromq-{0}.tar.gz"
    return url.format(version)