public static List<AuthMethodConfig> parse(final String methods, final Map<String, String> replacements) {
        try {
            if (methods == null || methods.isEmpty()) {
                return Collections.emptyList();
            }
            final List<AuthMethodConfig> ret = new ArrayList<AuthMethodConfig>();
            String[] parts = methods.split(",");
            for (String part : parts) {
                if (part.isEmpty()) {
                    continue;
                }
                int index = part.indexOf('?');
                if (index == -1) {
                    ret.add(createAuthMethodConfig(part, replacements));
                } else {
                    final String name = part.substring(0, index);
                    Map<String, Deque<String>> props = QueryParameterUtils.parseQueryString(part.substring(index + 1), UTF_8);
                    final AuthMethodConfig authMethodConfig = createAuthMethodConfig(name, replacements);
                    for (Map.Entry<String, Deque<String>> entry : props.entrySet()) {
                        Deque<String> val = entry.getValue();
                        if (val.isEmpty()) {
                            authMethodConfig.getProperties().put(entry.getKey(), "");
                        } else {
                            authMethodConfig.getProperties().put(entry.getKey(), val.getFirst());
                        }
                    }
                    ret.add(authMethodConfig);
                }
            }
            return ret;
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }
    }
@Test
    public void testPEMEncoded() throws Exception {
        String pemOrig = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQClH5+52mqHLdChbOfzuyue5FSDl2n1mOkpMlF1676NT79AScHVMi1Io"
                + "hWkuSe3W+oPLE+GAwyyr0DyolUmTkrhrMID6LamgmH8IzhOeyaxDOjwbCIUeGM1V9Qht+nTneRMhGa/oL687XioZiE1Ev52D8kMa"
                + "KMNMHprL9oOZ/QM4wIDAQAB";
        String pemEnc = URLEncoder.encode(pemOrig, "UTF-8");
        HashMap<String, String> props = new HashMap<>();
        List<AuthMethodConfig> authMethodConfigs = AuthMethodParser.parse("CUSTOM?publicKey="+pemEnc, props);
        AuthMethodConfig authMethodConfig = authMethodConfigs.get(0);
        String pemDecode = authMethodConfig.getProperties().get("publicKey");
        Assert.assertEquals("publicKey = pemOrig; failed probably due https://issues.jboss.org/browse/WFLY-9135",
                pemOrig, pemDecode);
    }