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examples/pdf-handling.ts
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215
examples/pdf-handling.ts
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import { PDFEmbedder, PDFExtractor, TInvoice, FacturXEncoder } from '../ts/index.js';
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import * as fs from 'fs/promises';
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/**
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* Example demonstrating how to use the PDF handling classes
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*/
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async function pdfHandlingExample() {
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try {
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// Create a sample invoice
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const invoice: TInvoice = createSampleInvoice();
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// Create a Factur-X encoder
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const encoder = new FacturXEncoder();
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// Generate XML
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const xmlContent = await encoder.encode(invoice);
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console.log('Generated XML:');
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console.log(xmlContent.substring(0, 500) + '...');
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// Load a sample PDF
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const pdfBuffer = await fs.readFile('examples/sample.pdf');
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console.log(`Loaded PDF (${pdfBuffer.length} bytes)`);
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// Create a PDF embedder
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const embedder = new PDFEmbedder();
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// Embed XML into PDF
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const modifiedPdfBuffer = await embedder.embedXml(
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pdfBuffer,
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xmlContent,
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'factur-x.xml',
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'Factur-X XML Invoice'
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);
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console.log(`Created modified PDF (${modifiedPdfBuffer.length} bytes)`);
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// Save the modified PDF
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await fs.writeFile('examples/output.pdf', modifiedPdfBuffer);
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console.log('Saved modified PDF to examples/output.pdf');
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// Create a PDF extractor
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const extractor = new PDFExtractor();
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// Extract XML from the modified PDF
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const extractedXml = await extractor.extractXml(modifiedPdfBuffer);
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console.log('Extracted XML:');
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console.log(extractedXml ? extractedXml.substring(0, 500) + '...' : 'No XML found');
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// Save the extracted XML
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if (extractedXml) {
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await fs.writeFile('examples/extracted.xml', extractedXml);
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console.log('Saved extracted XML to examples/extracted.xml');
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}
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console.log('PDF handling example completed successfully');
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} catch (error) {
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console.error('Error in PDF handling example:', error);
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}
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}
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/**
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* Creates a sample invoice for testing
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* @returns Sample invoice
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*/
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function createSampleInvoice(): TInvoice {
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return {
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type: 'invoice',
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id: 'INV-2023-001',
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invoiceType: 'debitnote',
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date: Date.now(),
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status: 'invoice',
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versionInfo: {
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type: 'final',
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version: '1.0.0'
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},
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language: 'en',
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incidenceId: 'INV-2023-001',
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from: {
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type: 'company',
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name: 'Supplier Company',
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description: 'Supplier',
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address: {
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streetName: 'Supplier Street',
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houseNumber: '123',
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postalCode: '12345',
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city: 'Supplier City',
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country: 'DE',
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countryCode: 'DE'
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},
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status: 'active',
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foundedDate: {
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year: 2000,
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month: 1,
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day: 1
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},
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registrationDetails: {
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vatId: 'DE123456789',
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registrationId: 'HRB12345',
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registrationName: 'Supplier Company GmbH'
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}
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},
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to: {
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type: 'company',
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name: 'Customer Company',
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description: 'Customer',
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address: {
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streetName: 'Customer Street',
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houseNumber: '456',
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postalCode: '54321',
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city: 'Customer City',
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country: 'DE',
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countryCode: 'DE'
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},
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status: 'active',
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foundedDate: {
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year: 2005,
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month: 6,
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day: 15
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},
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registrationDetails: {
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vatId: 'DE987654321',
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registrationId: 'HRB54321',
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registrationName: 'Customer Company GmbH'
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}
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},
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subject: 'Invoice INV-2023-001',
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content: {
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invoiceData: {
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id: 'INV-2023-001',
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status: null,
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type: 'debitnote',
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billedBy: {
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type: 'company',
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name: 'Supplier Company',
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description: 'Supplier',
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address: {
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streetName: 'Supplier Street',
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houseNumber: '123',
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postalCode: '12345',
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city: 'Supplier City',
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country: 'DE',
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countryCode: 'DE'
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},
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status: 'active',
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foundedDate: {
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year: 2000,
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month: 1,
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day: 1
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},
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registrationDetails: {
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vatId: 'DE123456789',
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registrationId: 'HRB12345',
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registrationName: 'Supplier Company GmbH'
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}
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},
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billedTo: {
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type: 'company',
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name: 'Customer Company',
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description: 'Customer',
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address: {
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streetName: 'Customer Street',
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houseNumber: '456',
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postalCode: '54321',
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city: 'Customer City',
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country: 'DE',
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countryCode: 'DE'
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},
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status: 'active',
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foundedDate: {
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year: 2005,
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month: 6,
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day: 15
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},
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registrationDetails: {
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vatId: 'DE987654321',
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registrationId: 'HRB54321',
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registrationName: 'Customer Company GmbH'
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}
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},
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deliveryDate: Date.now(),
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dueInDays: 30,
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periodOfPerformance: null,
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printResult: null,
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currency: 'EUR',
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notes: ['Thank you for your business'],
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items: [
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{
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position: 1,
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name: 'Product A',
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articleNumber: 'PROD-A',
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unitType: 'EA',
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unitQuantity: 2,
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unitNetPrice: 100,
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vatPercentage: 19
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},
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{
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position: 2,
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name: 'Service B',
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articleNumber: 'SERV-B',
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unitType: 'HUR',
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unitQuantity: 5,
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unitNetPrice: 80,
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vatPercentage: 19
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}
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],
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reverseCharge: false
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},
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textData: null,
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timesheetData: null,
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contractData: null
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}
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} as TInvoice;
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}
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// Run the example
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pdfHandlingExample();
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