def bucket_load(self, *args, **kwargs):
    """
    Calls s3.Client.list_buckets() to update the attributes of the Bucket
    resource.
    """
    # The docstring above is phrased this way to match what the autogenerated
    # docs produce.

    # We can't actually get the bucket's attributes from a HeadBucket,
    # so we need to use a ListBuckets and search for our bucket.
    # However, we may fail if we lack permissions to ListBuckets
    # or the bucket is in another account. In which case, creation_date
    # will be None.
    self.meta.data = {}
    try:
        response = self.meta.client.list_buckets()
        for bucket_data in response['Buckets']:
            if bucket_data['Name'] == self.name:
                self.meta.data = bucket_data
                break
    except ClientError as e:
        if not e.response.get('Error', {}).get('Code') == 'AccessDenied':
            raise

    Calls s3.Client.list_buckets() to update the attributes of the Bucket
    resource.
    
boto3/s3/inject.py