code: def jsonresolver_loader(url_map):
      
      from flask import current_app
      url_map.add(Rule(
          '/grants/10.13039/<path:doi_grant_code>',
          endpoint=resolve_grant_endpoint,
          host=current_app.config['OPENAIRE_JSONRESOLVER_GRANTS_HOST']))
docs: Resolve the OpenAIRE grant.