[Twisted-Python] Specifying ciphers in ssl.optionsForClientTLS

Hi, I need to loosen up the default cipher list to allow RC4 (some sites our customers use like myaccounts.socalgas.com still use it). I was going to pass the following dict into the extraCertificateOptions argument of ssl.optionsForClientTLS, but was curious if there as a better way: {"acceptableCiphers" : <IAcceptableCiphers object>} -J