if len(extData) == 2 {
				if !extData.ReadUint16((*uint16)(&m.selectedGroup)) {
					return false
				}
			} else {
				if !extData.ReadUint16((*uint16)(&m.serverShare.group)) ||
					!readUint16LengthPrefixed(&extData, &m.serverShare.data) {
					return false
				}
			}
		case extensionPreSharedKey:
			m.selectedIdentityPresent = true
			if !extData.ReadUint16(&m.selectedIdentity) {
				return false
			}