this.value = value;
        this.optional = optional;
        this.validationAction = validationAction;
    }

    private static final String VALUE_NOT_SET = "VALUE_NOT_SET";

    public static void reportValueNotSet(String propertyName, TypeValidationContext context, boolean hasConfigurableValue) {
        context.visitPropertyProblem(problem -> {
            ProblemSpec problemSpec = problem.forProperty(propertyName)

import java.util.Map;
import java.util.function.Supplier;

import static com.google.common.collect.ImmutableList.toImmutableList;
import static org.gradle.api.internal.tasks.properties.AbstractValidatingProperty.reportValueNotSet;
import static org.gradle.api.problems.Severity.ERROR;
import static org.gradle.internal.deprecation.Documentation.userManual;

public class DefaultTransform implements Transform {