The trillion dollar question: can a central bank bail out a central counterparty clearing house which is "Too Big To Fail"?

I have previously argued in my Article, Central Counterparties and the New Transnational Lex Mercatoria,' that the new transnational lex mercatoria is the main source of law governing the operations of central counterparties (CCPs or singularly CCP). It is a legal framework which recognizes that the customs, practices, and usages of CCPs are a legally binding source of law. That is to say, CCPs have operated as self-regulatory organizations (SROs) and have developed their own operations for risk management and default procedures by altering and adapting their customs and practices over the past several decades. Adhering to this framework, courts in various common law jurisdictions have enforced these customs and practices as legally binding between participants of the clearing system.