You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: opaque.go
    path of file: ./repos/merlin/pkg/authenticators/opaque
    
    the code of the file until where you have to start completion: /*
Merlin is a post-exploitation command and control framework.

This file is part of Merlin.
Copyright (C) 2023 Russel Van Tuyl

Merlin is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
any later version.

Merlin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Merlin.  If not, see <http://www.gnu.org/licenses/>.
*/

package opaque

imp
    
func (a *Authenticator) registrationInit(agentID uuid.UUID, o opaque.Opaque, opaqueServerKey kyber.Scalar) (opaque.Opaque, error) {
	slog.Log(context.Background(), logging.LevelTrace, "entering into function", "ID", agentID, "opaque", o, "opaqueServerKey", opaqueServerKey)
	defer slog.Log(context.Background(), logging.LevelTrace, "leaving function")
	slog.Debug(fmt.Sprintf("Received new agent OPAQUE user registration initialization from %s", agentID))

	returnMessage, opaqueServer, err := opaque2.ServerRegisterInit(agentID, o, opaqueServerKey)
	if err != nil {
		return opaque.Opaque{}, err
	}

	servers.Store(agentID, opaqueServer)

	if core.Debug {
		slog.Debug("Leaving opaque.registrationInit() function without error")
	}

	return returnMessage, nil
}