import org.gradle.api.provider.Provider;

import javax.annotation.Nullable;

public class FlatMapProvider<S, T> extends AbstractMinimalProvider<S> {
    private final ProviderInternal<? extends T> provider;
    private final Transformer<? extends Provider<? extends S>, ? super T> transformer;

    FlatMapProvider(ProviderInternal<? extends T> provider, Transformer<? extends Provider<? extends S>, ? super T> transformer) {

                }

                @Override
                String toString() {
                    return "Transformer with $provider"
                }
            }
            transform.provider = new FlatMapProvider(Providers.of("value"), transform)
            return transform.provider
        }
    }

    }

    @Override
    public <S> Provider<S> flatMap(final Transformer<? extends @org.jetbrains.annotations.Nullable Provider<? extends S>, ? super T> transformer) {
        return new FlatMapProvider<>(this, transformer);
    }

    /**
     * Returns the human consumable display name for this provider, or null if this is not known.
     */
    @Nullable
    protected DisplayName getDeclaredDisplayName() {

        counter.set(23)
        def unpackedValue = provider.get()

        then:
        unpackedValue == 46
        // Side effect of the provider returned by transform is executed first.
        // See FlatMapProvider for details
        1 * sideEffect2.execute(46)

        then: // ensure invocation order
        1 * sideEffect1.execute(23)
        0 * _

        when:
        unpackedValue = provider.get()