code: def get_resource(self, resource_key, repository_type, location,
                       **variables):
          
          path = "%s@%s" % (repository_type, location)
          repo = self.get_repository(path)
          resource = repo.get_resource(**variables)
          return resource
docs: Get a resource.
  
          Attempts to get and return a cached version of the resource if
          available, otherwise a new resource object is created and returned.
  
          Args:
              resource_key (`str`):  Name of the type of `Resources` to find
              repository_type (`str`): What sort of repository to look for the
                  resource in
              location (`str`): location for the repository
              variables: data to identify / store on the resource
  
          Returns:
              `PackageRepositoryResource` instance.