ossl_x509_get_issuer  711 ext/openssl/ossl_x509cert.c 		      ossl_x509_get_issuer(self),
ossl_x509_get_issuer  840 ext/openssl/ossl_x509cert.c     rb_define_method(cX509Cert, "issuer", ossl_x509_get_issuer, 0);