asCollectionProperty.convention(new DefaultProvider<>(() -> Cast.uncheckedNonnullCast(mapping.getValue(_convention, _source))));
        } else if (target instanceof ConfigurableFileCollection) {
            ConfigurableFileCollection asFileCollection = Cast.uncheckedNonnullCast(target);
            asFileCollection.convention((Callable) () -> mapping.getValue(_convention, _source));
        } else {

        assert values.length > 0;
        return new TestProvider<>(Cast.uncheckedNonnullCast(values[0].getClass()), Arrays.asList(values), null);
    }

    public static <T> ProviderInternal<T> withChangingExecutionTimeValues(T... values) {
        assert values.length > 0;
        return new TestProviderWithChangingValue<>(Cast.uncheckedNonnullCast(values[0].getClass()), Arrays.asList(values), null);
    }

        super.convention(provider);
        return this;
    }

    @Override
    public SetProperty<T> unset() {
        return uncheckedNonnullCast(super.unset());
    }

    @Override
    public SetProperty<T> unsetConvention() {
        return uncheckedNonnullCast(super.unsetConvention());
    }

        super.convention(provider);
        return this;
    }

    @Override
    public ListProperty<T> unset() {
        return uncheckedNonnullCast(super.unset());
    }

    @Override
    public ListProperty<T> unsetConvention() {
        return uncheckedNonnullCast(super.unsetConvention());
    }

            return Cast.uncheckedNonnullCast(STRING_SERIALIZER);
        }
        if (type.equals(Long.class)) {
            return Cast.uncheckedNonnullCast(LONG_SERIALIZER);
        }
        if (type.equals(File.class)) {
            return Cast.uncheckedNonnullCast(FILE_SERIALIZER);
        }
        if (type.equals(byte[].class)) {
            return Cast.uncheckedNonnullCast(BYTE_ARRAY_SERIALIZER);
        }

        ClassImplementationSnapshot currentImplementation = Cast.uncheckedNonnullCast(thisExecution.getImplementation());
        ClassImplementationSnapshot previousImplementation = Cast.uncheckedNonnullCast(lastExecution.getImplementation());
        ImmutableList<ImplementationSnapshot> currentAdditionalImplementations = Cast.uncheckedNonnullCast(thisExecution.getAdditionalImplementations());

            DefaultServiceSpec<?> spec = uncheckedNonnullCast(specInstantiator.newInstance(DefaultServiceSpec.class, parameters));
            spec.getMaxParallelUsages().set(maxUsages);
            return spec;
        };
        return doRegisterIfAbsent(name, uncheckedNonnullCast(implementationType), uncheckedNonnullCast(buildServiceSpecSupplier));
    }

                // Path is Iterable, but we don't want to unpack it
                Iterable<?> iterable = Cast.uncheckedNonnullCast(dependency);
                addAllFirst(queue, toArray(iterable, Object.class));
            } else if (dependency instanceof Map) {
                Map<?, ?> map = Cast.uncheckedNonnullCast(dependency);
                addAllFirst(queue, map.values().toArray());

        @Override
        public THIS value(@Nullable T value) {
            super.value(value);
            return Cast.uncheckedNonnullCast(this);
        }

        @Override
        public THIS value(Provider<? extends T> provider) {
            super.value(provider);
            return Cast.uncheckedNonnullCast(this);
        }

        @Override
        public void set(@Nullable File file) {

        return concat(node, key, isolate(value));
    }

    private <T> Isolatable<T> isolate(@Nullable T value) {
        if (value instanceof String) {
            return Cast.uncheckedNonnullCast(new CoercingStringValueSnapshot((String) value, instantiator));
        } else {
            return isolatableFactory.isolate(value);
        }
    }

    @Override