'Get a list of version Resources present on a project.
:param project: ID or key of the project to get versions from'

@translate_resource_args
def project_versions(self, project):

    r_json = self._get_json(((u'project/' + project) + u'/versions'))
    versions = [Version(self._options, self._session, raw_ver_json) for raw_ver_json in r_json]
    return versions
