def makeCertRequest(cn):
    key = KeyPair.generate()
    return key.certificateRequest(DN(CN=cn))
Helper: get an instance's tag cache.
dataset/ETHPy150Open twisted/vertex/vertex/test/test_identity.py/makeCertRequest--crossover with--dataset/ETHPy150Open amarandon/smeuhsocial/apps/tagging/fields.py/TagField._get_instance_tag_cache