code: def set_package_releases(self, project_name, versions):
          
          self.packages[project_name] = sorted(versions, reverse=True)
docs: Storage package information in ``self.packages``
  
          Args:
              project_name (str): This will be used as a the key in the
                  dictionary.
              versions (list): List of ``str`` representing the available
                  versions of a project.