[ensembl-dev] Registry->get_adaptor and magic strings

[Daniel Sobral]

Some people during a recent API course commented that 
Registry->get_adaptor() should return a warning or throw an error when 
invalid parameters are passed, instead of just returning undef. I also 
tend to agree with them.

Also, is there an easy / recommended way of knowing all the valid 
adaptors I can get with the registry?
I think this goes back to the topic of Ensembl API 'magic strings' that 
I see sometimes mentioned in the dev mailing list.
These should be minimized, or at least there should be obvious methods 
where we could find them.
Maybe there is and I just don't know about it...

Any opinion/help is most welcome.

Thanks,
Daniel