}

        public ToolchainsBuilderRequest build() {
            return new ToolchainsBuilderRequestBuilder.DefaultToolchainsBuilderRequest(
                    session, trace, installationToolchainsSource, userToolchainsSource);
        }

        private static class DefaultToolchainsBuilderRequest extends BaseRequest<ProtoSession>
                implements ToolchainsBuilderRequest {

import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.toolchain.PersistedToolchains;

/**
 *
 * @since 4.0.0
 */
@Experimental
public interface ToolchainsBuilderResult extends Result<ToolchainsBuilderRequest> {
    /**
     * Gets the assembled toolchains.
     *
     * @return the assembled toolchains, never {@code null}
     */
    @Nonnull
    PersistedToolchains getEffectiveToolchains();

    /**