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: client_controller.go
    path of file: ./repos/gitness/app/githook
    
    the code of the file until where you have to start completion: // Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by appli
    
func (f *ControllerClientFactory) NewClient(_ context.Context, envVars map[string]string) (hook.Client, error) {
	payload, err := hook.LoadPayloadFromMap[Payload](envVars)
	if err != nil {
		return nil, fmt.Errorf("failed to load payload from provided map of environment variables: %w", err)
	}

	// ensure we return disabled message in case it's explicitly disabled
	if payload.Disabled {
		return hook.NewNoopClient([]string{"hook disabled"}), nil
	}

	if err := payload.Validate(); err != nil {
		return nil, fmt.Errorf("payload validation failed: %w", err)
	}

	return &ControllerClient{
		baseInput:   getInputBaseFromPayload(payload),
		githookCtrl: f.githookCtrl,
	}, nil
}