/**
 * Legacy version of {@link java.util.function.Supplier java.util.function.Supplier}. Semantically,
 * this could be a factory, generator, builder, closure, or something else entirely. No guarantees
 * are implied by this interface.
 *
 * <p>The {@link Suppliers} class provides common suppliers and related utilities.
 *
 * <p>As this interface extends {@code java.util.function.Supplier}, an instance of this type can be

 * future version of {@code com.google.common.base.Supplier} will be made to <i>extend</i> {@code
 * java.util.function.Supplier}, making conversion code necessary only in one direction. At that
 * time, this interface will be officially discouraged.
 *
 * @author Harry Heymann
 * @since 2.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault

  }

  private static class SupplierComposition<F extends @Nullable Object, T extends @Nullable Object>
      implements Supplier<T>, Serializable {
    final Function<? super F, T> function;
    final Supplier<F> supplier;

    SupplierComposition(Function<? super F, T> function, Supplier<F> supplier) {
      this.function = checkNotNull(function);
      this.supplier = checkNotNull(supplier);
    }

  }

  private static class SupplierComposition<F extends @Nullable Object, T extends @Nullable Object>
      implements Supplier<T>, Serializable {
    final Function<? super F, T> function;
    final Supplier<F> supplier;

    SupplierComposition(Function<? super F, T> function, Supplier<F> supplier) {
      this.function = checkNotNull(function);
      this.supplier = checkNotNull(supplier);
    }

                    }

                    @TaskAction
                    void printValue() {
                        for (Supplier<String> supplier : suppliers) {
                            System.out.println("supplier -> " + supplier.get());
                        }
                    }
                }
            """
        }

        buildFile << """

import org.junit.Test
import java.util.function.Supplier


class SupplierCodecTest : AbstractFunctionalTypeTest() {

    @Test
    fun `defers evaluation of Supplier objects`() {
        assertDeferredEvaluationOf(supplier()) {
            get()
        }
    }

    @Test
    fun `defers evaluation of dynamic Supplier fields`() {
        assertDeferredEvaluationOf(BeanOf(supplier())) {
            value.get()
        }

        public int hashCode() {
            return hash;
        }
    }

    static class CachingSupplier<T> implements Supplier<T> {
        final Supplier<T> supplier;
        volatile Object value;

        CachingSupplier(Supplier<T> supplier) {
            this.supplier = supplier;
        }

        @Override
        @SuppressWarnings({"unchecked", "checkstyle:InnerAssignment"})
        public T get() {

  private final Supplier<Boolean> validator;
  private final Set<E> delegate;
  private final Supplier<String> errorMessage;

  public static final <E> InvalidatableSet<E> of(
      Set<E> delegate, Supplier<Boolean> validator, Supplier<String> errorMessage) {
    return new InvalidatableSet<>(
        checkNotNull(delegate), checkNotNull(validator), checkNotNull(errorMessage));
  }

  @Override
  protected Set<E> delegate() {

                        .collect(Collectors.toSet()),
                this.scope,
                this.priority) {
            @Override
            public Supplier<T> compile(Function<Key<?>, Supplier<?>> compiler) {
                final Supplier<T> compiledBinding = Binding.this.compile(compiler);
                final Consumer<T> consumer = bindingInitializer.compile(compiler);
                return () -> {

     *
     * @param error the error that caused this log
     */
    void debug(Throwable error);

    void debug(Supplier<String> content);

    void debug(Supplier<String> content, Throwable error);

    /**
     * {@return true if the <b>info</b> error level is enabled}.
     */
    boolean isInfoEnabled();

    /**