[aerogear-dev] Android library: Are nulls icky

So I try to avoid nulls wherever possible. In the case of the Authenticator (and Pipeline) API's we have methods get(String name). The obvious thing to do would be to return a null object if the name isn't a known name. Would it be better/preferable to return some kind of default AuthenticationModule (or Pipe) which does nothing instead? Alternatively we could supply a peek(name) method which tests for the name and throw an exception if you call get with a bad name. Just some idle thoughts. Summers