import javax.annotation.Nullable;

public interface TransformUpstreamDependencies extends TaskDependencyContainer {

    @Nullable
    ConfigurationIdentity getConfigurationIdentity();

    /**
     * Returns a collection containing the future artifacts for the given transform step.
     */
    FileCollection selectedArtifacts();

    /**

    }
}


class FixedUpstreamDependencies(private val dependencies: TransformDependencies, private val configurationIdentity: ConfigurationIdentity) : TransformUpstreamDependencies {

    override fun getConfigurationIdentity(): ConfigurationIdentity {
        return configurationIdentity
    }

    override fun visitDependencies(context: TaskDependencyResolveContext) {
        throw IllegalStateException("Should not be called")