Equivalent for removed legacyKeyLookup #151
Description
Hi, as pointed out in this PR/comment we are looking for some equivalent of the dropped legacyKeyLookup method, i.e. a method that allows to check for the presence of a key in a verifierId without the call resulting in a creation of the key if it doesn't exist (which is currently the side effect of GetPubKeyOrKeyAssign call). Is there any such method, and if not, could you please introduce it?
Our usecase is detection of whether a user has ever created a key on a verifier or not and based on that we have some custom migration logic
Related comment/PR: #132 (comment)