Расшифровать PDF в Node.js SDK

    import credentials from "../../../Credentials/credentials.json"  with { type: "json" };    // json-file in this format: { "id": "*****", "key": "*******" }
    import fs from 'node:fs/promises';
    import path from 'node:path';
    import { PdfApi } from "../../src/api/api.js";

    const configParams = {
        LOCAL_FOLDER: "C:\\Samples\\",
        PDF_DOCUMENT_NAME: "sample_encrypted.pdf",
        LOCAL_RESULT_DOCUMENT_NAME: "output_sample.pdf",
        DOCUMENT_PASSWORD: "Owner-Password"
    };

    const pdfApi = new PdfApi(credentials.id, credentials.key);

    const pdfEncoder = {
        async uploadDocument () {
            const fileNamePath = path.join(configParams.LOCAL_FOLDER, configParams.PDF_DOCUMENT_NAME);
            const pdfFileData = await fs.readFile(fileNamePath);
            await pdfApi.uploadFile(configParams.PDF_DOCUMENT_NAME, pdfFileData)
                .then(() => console.log("File: '" + configParams.PDF_DOCUMENT_NAME +"' successfully uploaded."));
        },

        async downloadResult() {
            const changedPdfData = await pdfApi.downloadFile(configParams.PDF_DOCUMENT_NAME);
            const filePath = path.join(configParams.LOCAL_FOLDER, configParams.LOCAL_RESULT_DOCUMENT_NAME);
            await fs.writeFile(filePath, changedPdfData.body);
            console.log("Downloaded: " + filePath);
        },

        async decrypt_document() {
            const password_encoded = btoa(configParams.DOCUMENT_PASSWORD)

            const response = await pdfApi.postDecryptDocumentInStorage(configParams.PDF_DOCUMENT_NAME, password_encoded);

            if (response.body.code == 200)
                console.log("decrypt_document(): Document #'" + configParams.PDF_DOCUMENT_NAME + "' successfully decrypted.")
            else
                throw new Error("decrypt_document(): Failed to decrypt document #'" + configParams.PDF_DOCUMENT_NAME + "'. Response code: {" + response.code + "}")
        },
        
    }

    async function main() {
        try {
            await pdfEncoder.uploadDocument();
            await pdfEncoder.decrypt_document();
            await pdfEncoder.downloadResult();
        } catch (error) {
            console.error("Error:", error.message);
        }
    }