* <pre>
     * message:
     * </pre>
     * @param property The property name for the message. (NotNull)
     * @return this. (NotNull)
     */
    public FessMessages addErrorsFrontHeader(String property) {
        assertPropertyNotNull(property);
        add(property, new UserMessage(ERRORS_front_header));
        return this;
    }

    /**

        when:
        render mutableSetter {
            property('someProperty')
            propertyType('Property<String>')
            includeLink()
        }

        then:
        outputEquals """
Property 'someProperty' of mutable type 'Property<String>' is writable.

Reason: Properties of type 'Property<String>' are already mutable.

Possible solution: Remove the 'setSomeProperty' method.

		<!-- 
		<property name="parameterKey">"fessRoles"</property>
		<property name="encryptedParameterValue">false</property>
		<property name="headerKey">"fessRoles"</property>
		<property name="encryptedHeaderValue">true</property>
		<property name="cookieKey">"fessRoles"</property>
		<property name="encryptedCookieValue">true</property>
		<property name="cipher">

                                     "System.getProperties().get('some.property')",
                                     "getProperties().get('some.property')",
                                     "System.getProperty('some.property')",
                                     "System.getProperty(*['some.property'])",
                                     "getProperty('some.property')",

     * This property will query the entries of the map each time the value of this property is queried.
     *
     * <p>This method can also be used to discard the value of the property, by passing {@code null} as the value.
     * The convention for this property, if any, will be used to provide the value instead.
     *
     * @param entries the entries, can be {@code null}
     */

The property must not have any setter methods.

Here is an example of a task type with an `uri` property of type `URI`:

[source,java]
.Download.java
----
include::{snippetsPath}/plugins/mutableManagedProperty/groovy/buildSrc/src/main/java/Download.java[tags=download]
----

Note that for a property to be considered a mutable managed property, the property's getter methods must be `abstract` and have `public` or `protected` visibility.

        name = objectFactory.property(String.class);
        url = objectFactory.property(String.class);
        distribution = objectFactory.property(String.class);
        comments = objectFactory.property(String.class);
    }

    @Override
    public Property<String> getName() {
        return name;
    }

    @Override
    public Property<String> getUrl() {
        return url;
    }

    }

    def "provider modifications should be visible on a view"() {
        given:
        def property = multiValueProperty()
        Collection<String> collection = newCollection(property)

        when:
        property.add("first")
        property.add("second")
        property.add("third")
        property.addAll(["forth", "fifth"])

        then:

            def property = objects.property(Integer)
            property.set(provider)

            assert property.get() == 1
            assert property.get() == 2

            property.finalizeValueOnRead()

            assert counter == 2 // is lazy
            assert property.get() == 3

            counter = 45
            assert property.get() == 3

            property.set(12)

    }

    private static boolean isNameProperty(PropertyMetadata property) {
        // Property is read only, called "name", has type String and getter is abstract
        return property.isReadOnly() && "name".equals(property.getName()) && property.getType() == String.class && property.getMainGetter().isAbstract();
    }

    private static boolean hasPropertyType(PropertyMetadata property) {