/**
     * Initialize singleton context using custom properties
     *
     * This method can only be called once.
     *
     * @param props the properties to use for initialization
     * @throws CIFSException if the singleton context is already initialized or there is an error during initialization
     */
    public static synchronized final void init(final Properties props) throws CIFSException {
        if (INSTANCE != null) {

        Activation a = Activation.newBuilder().property(ap).build();

        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();

		<developerConnection>scm:git:******@****.***:codelibs/curl4j.git</developerConnection>
		<url>******@****.***:codelibs/curl4j.git</url>
	  <tag>HEAD</tag>
  </scm>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>
	<build>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.14.0</version>
				<configuration>
					<encoding>UTF-8</encoding>

                            "properties": {"ok": {"title": "Ok", "type": "boolean"}},
                        },
                        "ValidationError": {
                            "title": "ValidationError",
                            "required": ["loc", "msg", "type"],
                            "type": "object",
                            "properties": {

                        "title": "Body_hello_tuple_form__post",
                        "required": ["values"],
                        "type": "object",
                        "properties": {
                            "values": {
                                "title": "Values",
                                "maxItems": 2,
                                "minItems": 2,

    /**
     * Gets the system properties to use for interpolation and profile activation. The system properties are collected
     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @return The system properties, never {@code null}.
     */
    Properties getSystemProperties();

    /**

                        "type": "object",
                        "properties": {"data": {"title": "Data", "type": "string"}},
                    },
                    "ValidationError": {
                        "title": "ValidationError",
                        "required": ["loc", "msg", "type"],
                        "type": "object",
                        "properties": {
                            "loc": {

        return new CopyOptions().exclude(propertyNames);
    }

    /**
     * Returns a {@link CopyOptions} that excludes properties with {@literal null} values from the operation.
     *
     * @return A {@link CopyOptions} that excludes properties with {@literal null} values from the operation.
     * @see CopyOptions#excludeNull()
     */
    public static CopyOptions excludeNull() {

          "unit": "bytes"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "Replication Errors"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "light-red",
                  "mode": "fixed"
                }
              }

            entry.setValue(entry.getValue() + "x");
        }
        Object o21 = properties.get(KEY1);
        assertEquals(VALUE1 + "x", o21);

        baos = new ByteArrayOutputStream();
        properties.save(baos);

        properties = new MavenProperties();
        properties.load(new ByteArrayInputStream(baos.toByteArray()));
        Object o2 = properties.get(KEY1);