deserialize(mapper, responseBody, objectName, options = { xml: {} }) {
        var _a, _b, _c, _d;
        const updatedOptions = {
            xml: {
                rootName: (_a = options.xml.rootName) !== null && _a !== void 0 ? _a : "",
                includeRoot: (_b = options.xml.includeRoot) !== null && _b !== void 0 ? _b : false,
                xmlCharKey: (_c = options.xml.xmlCharKey) !== null && _c !== void 0 ? _c : interfaces_js_1.XML_CHARKEY,
            },
            ignoreUnknownProperties: (_d = options.ignoreUnknownProperties) !== null && _d !== void 0 ? _d : false,
        };
        if (responseBody === undefined || responseBody === null) {
            if (this.isXML && mapper.type.name === "Sequence" && !mapper.xmlIsWrapped) {
                // Edge case for empty XML non-wrapped lists. xml2js can't distinguish
                // between the list being empty versus being missing,
                // so let's do the more user-friendly thing and return an empty list.
                responseBody = [];
            }
            // specifically check for undefined as default value can be a falsey value `0, "", false, null`
            if (mapper.defaultValue !== undefined) {
                responseBody = mapper.defaultValue;
            }
            return responseBody;
        }
        let payload;
        const mapperType = mapper.type.name;
        if (!objectName) {
            objectName = mapper.serializedName;
        }
        if (mapperType.match(/^Composite$/i) !== null) {
            payload = deserializeCompositeType(this, mapper, responseBody, objectName, updatedOptions);
        }
        else {
            if (this.isXML) {
                const xmlCharKey = updatedOptions.xml.xmlCharKey;
                /**
                 * If the mapper specifies this as a non-composite type value but the responseBody contains
                 * both header ("$" i.e., XML_ATTRKEY) and body ("#" i.e., XML_CHARKEY) properties,
                 * then just reduce the responseBody value to the body ("#" i.e., XML_CHARKEY) property.
                 */
                if (responseBody[interfaces_js_1.XML_ATTRKEY] !== undefined && responseBody[xmlCharKey] !== undefined) {
                    responseBody = responseBody[xmlCharKey];
                }
            }
            if (mapperType.match(/^Number$/i) !== null) {
                payload = parseFloat(responseBody);
                if (isNaN(payload)) {
                    payload = responseBody;
                }
            }
            else if (mapperType.match(/^Boolean$/i) !== null) {
                if (responseBody === "true") {
                    payload = true;
                }
                else if (responseBody === "false") {
                    payload = false;
                }
                else {
                    payload = responseBody;
                }
            }
            else if (mapperType.match(/^(String|Enum|Object|Stream|Uuid|TimeSpan|any)$/i) !== null) {
                payload = responseBody;
            }
            else if (mapperType.match(/^(Date|DateTime|DateTimeRfc1123)$/i) !== null) {
                payload = new Date(responseBody);
            }
            else if (mapperType.match(/^UnixTime$/i) !== null) {
                payload = unixTimeToDate(responseBody);
            }
            else if (mapperType.match(/^ByteArray$/i) !== null) {
                payload = base64.decodeString(responseBody);
            }
            else if (mapperType.match(/^Base64Url$/i) !== null) {
                payload = base64UrlToByteArray(responseBody);
            }
            else if (mapperType.match(/^Sequence$/i) !== null) {
                payload = deserializeSequenceType(this, mapper, responseBody, objectName, updatedOptions);
            }
            else if (mapperType.match(/^Dictionary$/i) !== null) {
                payload = deserializeDictionaryType(this, mapper, responseBody, objectName, updatedOptions);
            }
        }
        if (mapper.isConstant) {
            payload = mapper.defaultValue;
        }
        return payload;
    }
Deserialize the given object based on its metadata defined in the mapper

@param mapper - The mapper which defines the metadata of the serializable object

@param responseBody - A valid Javascript entity to be deserialized

@param objectName - Name of the deserialized object

@param options - Controls behavior of XML parser and builder.

@returns A valid deserialized Javascript object