import org.gradle.model.internal.manage.schema.ScalarValueSchema;
import org.gradle.model.internal.type.ModelType;

import static org.gradle.model.internal.manage.schema.extract.PrimitiveTypes.isPrimitiveType;

public class PrimitiveStrategy implements ModelSchemaExtractionStrategy {

    @Override
    public <T> void extract(ModelSchemaExtractionContext<T> extractionContext) {
        ModelType<T> type = extractionContext.getType();

        return new DefaultModelSchemaExtractor(ImmutableList.<ModelSchemaExtractionStrategy>builder()
            .addAll(strategies)
            .add(new PrimitiveStrategy())
            .add(new EnumStrategy())
            .add(new JdkValueTypeStrategy())
            .add(new ModelSetStrategy())
            .add(new SpecializedMapStrategy())
            .add(new ModelMapStrategy())

Class <org.gradle.model.internal.manage.schema.extract.PrimitiveStrategy> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (PrimitiveStrategy.java:0)