pw.println("key3 = val3");
        pw.println("");

        MavenProperties props = new MavenProperties();
        props.load(new StringReader(sw.toString()));
        props.save(System.err);
        System.err.println("=====");

        props.put("key2", props.get("key2"));
        props.put("key3", "foo");
        props.save(System.err);
        System.err.println("=====");
    }

    @Test

                final Properties props, final List<String> readConfigList) {
            if (props == null) {
                return;
            }
            super.setupServerConfigIfNeeds(logger, server, connector, props, readConfigList);
            doSetupServerConfig(logger, props, "SSLEnabled", value -> {
                if ("true".equalsIgnoreCase(value)) {

        Map<String, String> props = new LinkedHashMap<>();
        props.put("javax.version", "3.1.0");
        props.put("mockito.version", "1.10.19");
        props.put("hamcret.version", "2.1");
        props.put("lombok.version", "1.18.6");
        props.put("junit.version", "4.12");
        Model model = Model.newBuilder(true).properties(props).build();
        String xml = toXml(model);

        Properties props = cliRequest.getUserProperties();
        if (cliRequest.getRootDirectory() != null) {
            props = new Properties();
            props.putAll(cliRequest.getUserProperties());
            props.put("session.rootDirectory", cliRequest.getRootDirectory().toString());
        }
        settingsRequest.setUserProperties(props);

                String overrideName = name.substring(OVERRIDE_PREFIX.length());
                props.put(overrideName, substVars(value, name, props, callback));
            } else {
                props.put(name, substVars(value, name, props, callback));
            }
        }
        props.keySet().removeIf(k -> k.startsWith(OVERRIDE_PREFIX));
    }

    private static MavenProperties loadPropertiesFile(

        osActivation.setOs( activationOS );

        osActivated.setActivation( osActivation );

        Properties props = System.getProperties();
        ProfileActivationContext ctx = new ProfileActivationContext( props, false );

        ProfileManager profileManager = new DefaultProfileManager( getContainer(), props );

        profileManager.addProfile( osActivated );

        List active = profileManager.getActiveProfiles( null );

        Properties props = new Properties();
        props.put("key", "user_value");
        ToolchainModel toolchain = new ToolchainModel();
        toolchain.setType("TYPE");
        toolchain.setProvides(props);
        PersistedToolchains userResult = new PersistedToolchains();
        userResult.setToolchains(Collections.singletonList(toolchain));

        props = new Properties();

            Artifact artifact = result.getArtifact();
            Map<String, String> props = new HashMap<>(artifact.getProperties());
            props.put(ArtifactProperties.DOWNLOAD_URL, downloadUrl);
            result.setArtifact(artifact.setProperties(props));
        }
    }

                if (error != null) {
                    props.setProperty(key + ERROR_KEY_SUFFIX, error);
                } else {
                    props.remove(key + ERROR_KEY_SUFFIX);
                }

                getLogger().debug("Writing resolution-state to: " + touchfile);
                channel.truncate(0);

        Profile p = Profile.newBuilder().activation(a).build();

        return p;
    }

    private Properties newProperties(String key, String value) {
        Properties props = new Properties();
        props.setProperty(key, value);
        return props;
    }

    @Test
    void testNullSafe() throws Exception {
        Profile p = Profile.newInstance();

        assertActivation(false, p, newContext(null, null));