Criar um cliente com o Application Default Credentials

public static void implicit() {   // Instantiate a client. If you don't specify credentials when constructing a client, the   // client library will look for credentials in the environment, such as the   // GOOGLE_APPLICATION_CREDENTIALS environment variable.   BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();    // Use the client.   System.out.println("Datasets:");   for (Dataset dataset : bigquery.listDatasets().iterateAll()) {     System.out.printf("%s%n", dataset.getDatasetId().getDataset());   } }

// Import the Google Cloud client library using default credentials const {BigQuery} = require('@google-cloud/bigquery'); const bigquery = new BigQuery();

use Google\Cloud\BigQuery\BigQueryClient;  /** Uncomment and populate these variables in your code */ //$projectId = 'The Google project ID';  $bigQuery = new BigQueryClient([     'projectId' => $projectId, ]);

from google.cloud import bigquery  # If you don't specify credentials when constructing the client, the # client library will look for credentials in the environment. client = bigquery.Client()