def _simple_repository_list_versions(self, package_name: str) -> list:
result = set()<EOL>for artifact_name, _ in self._simple_repository_list_artifacts(package_name):<EOL><INDENT>result.add(self._parse_artifact_version(package_name, artifact_name))<EOL><DEDENT>result = list(result)<EOL>_LOGGER.debug("<STR_LIT>", self.url, self.name, result)<EOL>return result<EOL>
List versions of package available on a simple repository.