public void beforeMutate(Describable displayName) {
            if (disallowChanges) {
                throw new IllegalStateException(String.format("The value for %s cannot be changed any further.", displayName.getDisplayName()));
            }
        }

        @Override
        public void disallowChanges() {
            disallowChanges = true;
        }

        @Override

                finalizeNow(context, ValueConsumer.IgnoreUnsafeRead);
            }
        }
    }

    @Override
    public void disallowChanges() {
        state.disallowChanges();
    }

    @Override
    public void finalizeValueOnRead() {
        state.finalizeOnNextGet();
    }

    @Override
    public void implicitFinalizeValue() {

        valueState = valueState.finalState();
    }

    public boolean isFinalizing() {
        return valueState.isFinalizing();
    }

    @Override
    public void disallowChanges() {
        valueState.disallowChanges();
    }

    @Override
    public void finalizeValueOnRead() {
        valueState.finalizeOnNextGet();
    }

    @Override
    public void implicitFinalizeValue() {

            def files = objects.fileCollection()
            def name = 'other'
            files.from { name }

            def names = ['b', 'c']
            files.from(names)

            files.disallowChanges()
            name = 'a'
            names.clear()

            assert files.files as List == [file('a')]

            files.from('broken')
        """

        when:
        fails('broken')

def provider = providers.provider { [++counter, ++counter] }

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

assert property.get() == [1, 2]
assert property.get() == [3, 4]
property.disallowChanges()
assert property.get() == [5, 6]
assert property.get() == [7, 8]

property.set([1])
"""

        when:
        fails()

        then:

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

            assert property.get() == 1
            assert property.get() == 2
            property.disallowChanges()
            assert property.get() == 3
            assert property.get() == 4

            property.set(12)
        """

        when:
        fails()

        then:

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

            assert property.get() == [1: 2]
            assert property.get() == [3: 4]
            property.disallowChanges()
            assert property.get() == [5: 6]
            assert property.get() == [7: 8]

            property.set([1: 2])
            '''.stripIndent()

        when:
        fails()