docs: async function getSimilarProductsFile(
    projectId,
    location,
    productSetId,
    productCategory,
    filePath,
    filter
  ) {
    // Imports the Google Cloud client library
    const vision = require('@google-cloud/vision');
    const fs = require('fs');
    // Creates a client
    const productSearchClient = new vision.ProductSearchClient();
    const imageAnnotatorClient = new vision.ImageAnnotatorClient();
  
    /**
     * TODO(developer): Uncomment the following line before running the sample.
     */
    // const projectId = 'nodejs-docs-samples';
    // const location = 'us-west1';
    // const productSetId = 'indexed_product_set_id_for_testing';
    // const productCategory = 'apparel';
    // const filePath = './resources/shoes_1.jpg';
    // const filter = '';
    const productSetPath = productSearchClient.productSetPath(
      projectId,
      location,
      productSetId
    );
    const content = fs.readFileSync(filePath, 'base64');
    const request = {
      // The input image can be a GCS link or HTTPS link or Raw image bytes.
      // Example:
      // To use GCS link replace with below code
      // image: {source: {gcsImageUri: filePath}}
      // To use HTTP link replace with below code
      // image: {source: {imageUri: filePath}}
      image: {content: content},
      features: [{type: 'PRODUCT_SEARCH'}],
      imageContext: {
        productSearchParams: {
          productSet: productSetPath,
          productCategories: [productCategory],
          filter: filter,
        },
      },
    };
    const [response] = await imageAnnotatorClient.batchAnnotateImages({
      requests: [request],
    });
    console.log('Search Image:', filePath);
    const results = response['responses'][0]['productSearchResults']['results'];
    console.log('\nSimilar product information:');
    results.forEach(result => {
      console.log('Product id:', result['product'].name.split('/').pop(-1));
      console.log('Product display name:', result['product'].displayName);
      console.log('Product description:', result['product'].description);
      console.log('Product category:', result['product'].productCategory);
    });
  }