<div class="block">Registers within the (in-memory) factory, a provider of ServerAuthConfig and/or ClientAuthConfig objects for a
 message layer and application context identifier. This method does NOT effect the factory's persistent declarative
 representation of provider registrations, and is intended to be used by providers to perform self-Registration.

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 At most one registration may exist within the factory for a given combination of message layer and appContext. Any
 pre-existing registration with