class Net::IMAP::SASL::AuthenticationExchange

def authenticate

drop the connection.
exception. Any exceptions other than those in RESPONSE_ERRORS will
using #authenticator. Authentication failures will raise an
Call #authenticate to execute an authentication exchange for #client 
def authenticate
  client.run_command(mechanism, initial_response) { process _1 }
    .tap { raise AuthenticationIncomplete, _1 unless done? }
rescue *client.response_errors
  raise # but don't drop the connection
rescue
  client.drop_connection
  raise
rescue Exception # rubocop:disable Lint/RescueException
  client.drop_connection!
  raise
end