expect:
        assertHasKnownProducer(property)
        def value = property.calculateExecutionTimeValue()
        value.hasFixedValue()
        !value.hasChangingContent()
        value.getFixedValue().isEmpty()
    }

    def "has no producer and missing execution time value when element provider with no value added"() {
        given:
        property.putAll([a: '1', b: '2'])

        property.set(someValue())
        property.finalizeValueOnRead()

        expect:
        property.calculateExecutionTimeValue().getFixedValue() == someValue()
        property.set(someOtherValue())
        property.calculateExecutionTimeValue().getFixedValue() == someOtherValue()
        property.get() == someOtherValue()
    }

        expect:
        assertHasKnownProducer(property)
        def value = property.calculateExecutionTimeValue()
        value.hasFixedValue()
        !value.hasChangingContent()
        value.getFixedValue().isEmpty()
    }

    def "has no producer and missing execution time value when element provider with no value added"() {
        given:
        property.addAll("a", "b")