code: def buckets_get(bucket_name):
      """Implement the 'Buckets: get' API: return the metadata for a bucket."""
      base_url = flask.url_for("gcs_index", _external=True)
      insert_magic_bucket(base_url)
      bucket = testbench_utils.lookup_bucket(bucket_name)
      bucket.check_preconditions(flask.request)
      return testbench_utils.filtered_response(
          flask.request, bucket.metadata
      )
  
imports: import argparse
  import error_response
  import flask
  import gcs_bucket
  import gcs_object
  import json
  import os
  import re
  import testbench_utils
  import time
  import sys
  from werkzeug import serving
  from werkzeug.middleware.dispatcher import DispatcherMiddleware
label_desc: Use image node_id 12 for calling a global function with example usage: buckets_get(bucket_name) and returns: testbench_utils