Generate s3 application bucket name.

        Args:
            include_region (bool): Include region in the name generation.

def s3_app_bucket(self, include_region=False):
        """Generate s3 application bucket name.

        Args:
            include_region (bool): Include region in the name generation.
        """
        if include_region:
            s3_app_bucket = self.format['s3_app_region_bucket'].format(**self.data)
        else:
            s3_app_bucket = self.format['s3_app_bucket'].format(**self.data)
        return s3_app_bucket