Create an initial response based on selected mechanism.
May be null if there is no initial response.
@return the initial response, or null if there isn't one. @throws SaslException if an error occurs computing the response.
See Implementation
Create an initial response based on selected mechanism.
May be null if there is no initial response.
@return the initial response, or null if there isn't one. @throws SaslException if an error occurs computing the response.