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: chunk_payload_data.go
    path of file: ./repos/scan4all/vendor/github.com/pion/sctp
    
    the code of the file until where you have to start completion: // SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifie
    
func (p PayloadProtocolIdentifier) String() string {
	switch p {
	case PayloadTypeWebRTCDCEP:
		return "WebRTC DCEP"
	case PayloadTypeWebRTCString:
		return "WebRTC String"
	case PayloadTypeWebRTCBinary:
		return "WebRTC Binary"
	case PayloadTypeWebRTCStringEmpty:
		return "WebRTC String (Empty)"
	case PayloadTypeWebRTCBinaryEmpty:
		return "WebRTC Binary (Empty)"
	default:
		return fmt.Sprintf("Unknown Payload Protocol Identifier: %d", p)
	}
}