// Copyright (c) 2015-2021 MinIO, Inc.//// This file is part of MinIO Object Storage stack//// This program is free software: you can redistribute it and/or modify// it under the terms of the GNU Affero General Public License as published by// the Free Software Foundation, either version 3 of the License, or// (at your option) any later version.//// This program 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 Affero General Public License for more details.//// You should have received a copy of the GNU Affero General Public License// along with this program.  If not, see <http://www.gnu.org/licenses/>. package replication import (	"fmt") // Error is the generic type for any error happening during tag// parsing.type Error struct {	err error} // Errorf - formats according to a format specifier and returns// the string as a value that satisfies error of type tagging.Errorfunc Errorf(format string, a ...interface{}) error {	return Error{err: fmt.Errorf(format, a...)}} // Unwrap the internal error.func (e Error) Unwrap() error { return e.err } // Error 'error' compatible method.func (e Error) Error() string {	if e.err == nil {		return "replication: cause <nil>"	}	return e.err.Error()}