public AbstractProperty(PropertyHost host) {
        state = ValueState.newState(host);
    }

    protected void init(S initialValue, S convention) {
        this.value = initialValue;
        this.state.setConvention(convention);
    }

    protected void init(S initialValue) {
        init(initialValue, initialValue);
    }

    @Override
    public boolean isFinalized() {
        return state.isFinalized();
    }

Method <org.gradle.api.Project.getConfigurations()> does not have raw return type assignable to org.gradle.api.provider.Provider in (Project.java:0)
Method <org.gradle.api.Project.getConvention()> does not have raw return type assignable to org.gradle.api.provider.Provider in (Project.java:0)

        if (elements == null) {
            unsetConvention();
        } else {
            setConvention(new CollectingSupplier(new ElementsFromCollection<>(elements)));
        }
        return this;
    }

    @Override
    public HasMultipleValues<T> convention(Provider<? extends Iterable<? extends T>> provider) {
        setConvention(new CollectingSupplier(new ElementsFromCollectionProvider<>(Providers.internal(provider))));

        filesWrapper = new PathSet();
        buildDependency = dependencyFactory.configurableDependency();
    }

    private void init(ValueCollector initialValue, ValueCollector convention) {
        this.valueState.setConvention(convention);
        this.value = initialValue;
    }

    protected void withActualValue(Action<Configurer> action) {
        setToConventionIfUnset();
        action.execute(getConfigurer());
    }