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: admin_incremental_alter_configs.go
    path of file: ./repos/confluent-kafka-go/examples/admin_incremental_alter_configs
    
    the code of the file until where you have to start completion: /**
 * Copyright 2023 Confluent 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/licens
    
func parseAlterConfigOpType(s string) kafka.AlterConfigOpType {
	switch strings.ToUpper(s) {
	case "SET":
		return kafka.AlterConfigOpTypeSet
	case "DELETE":
		return kafka.AlterConfigOpTypeDelete
	case "APPEND":
		return kafka.AlterConfigOpTypeAppend
	case "SUBTRACT":
		return kafka.AlterConfigOpTypeSubtract
	default:
		usage(fmt.Sprintf("Invalid alter config operation type: %s", s))
	}
	return kafka.AlterConfigOpTypeSet
}