code: def package_releases(self, project_name):
          
          try:
              return self._connection.package_releases(project_name)
          except Exception as err:
              raise PyPIClientError(err)
docs: Retrieve the versions from PyPI by ``project_name``.
  
          Args:
              project_name (str): The name of the project we wish to retrieve
                  the versions of.
  
          Returns:
              list: Of string versions.