*/
    Property<T> value(@Nullable T value);

    /**
     * Sets the property to have the same value as the given provider, replacing whatever value the property already had.
     * This property will track the value of the provider and query its value each time the value of the property is queried.
     * When the provider has no value, this property will also have no value. This is the same as {@link #set(Provider)}

Laura Kassovic <******@****.***> 1712936267 -0700

  <packaging>pom</packaging>

  <profiles>

    <profile>
      <id>property-name-project-version</id>
      <activation>
        <property>
          <name>${project.version}</name>
        </property>
      </activation>
    </profile>
    <profile>
      <id>property-value-project-version</id>
      <activation>
        <property>
          <name>project.version</name>
          <value>${project.version}</value>

        def property = property()
        property.set(someValue())
        property.set((String) null)

        expect:
        !property.present
        property.getOrNull() == null
        property.getOrElse(someValue()) == someValue()
        property.getOrElse(null) == null
    }

    def "can't set null provider to discard value"() {
        given:
        def property = property()

        given:
        property.set(notDefined())
        and:
        property.put('k1', 'v1')
        property.put('k2', Providers.of('v2'))
        property.putAll(['k3': 'v3'])
        property.putAll(Providers.of(['k4': 'v4']))

        expect:
        !property.present
        property.getOrNull() == null
        property.getOrElse(['kk': 'vv']) == ['kk': 'vv']

        when:
        property.get()
        then:

		<property name="queueIndex">"fess_crawler.queue"</property>
		<property name="queueShards">5</property>
		<property name="queueReplicas">1</property>
		<property name="dataIndex">"fess_crawler.data"</property>
		<property name="dataShards">5</property>
		<property name="dataReplicas">1</property>
		<property name="filterIndex">"fess_crawler.filter"</property>
		<property name="filterShards">5</property>

		<property name="name">"htmlTransformer"</property>
		<property name="featureMap">defaultFeatureMap</property>
		<property name="propertyMap">defaultPropertyMap</property>
		<property name="childUrlRuleMap">allChildUrlRuleMap</property>
	</component>

	<component name="htmlOnlyTransformer"
		class="org.codelibs.fess.crawler.transformer.impl.HtmlTransformer" instance="singleton">

    }

    def "list property has empty list as value"() {
        expect:
        def property = factory.listProperty(String)
        property.present
        property.get().empty
    }

    def "can create list property with primitive type"() {
        given:
        def property = factory.listProperty(type)

        expect:
        property.elementType == boxedType

        where:

        property.get() == someValue()

        property.set(someOtherValue())
        property.present
        property.get() == someOtherValue()
    }

    def "can use null convention value"() {
        def property = propertyWithNoValue()
        assert property.getOrNull() != someValue()

        expect:
        nullConvention(property)

        !property.present
        property.getOrNull() == null

        given:
        def property = property()
        property.set(someValue())
        property.set((Iterable) null)

        expect:
        !property.present
        property.getOrNull() == null
        property.getOrElse(someValue()) == someValue()
        property.getOrElse(null) == null
    }

    def "can set null value to remove any added values"() {
        property.add("abc")