public class DefaultToolchainsBuildingRequest implements ToolchainsBuildingRequest {
    private Source globalToolchainsSource;

    private Source userToolchainsSource;

    @Override
    public Source getGlobalToolchainsSource() {
        return globalToolchainsSource;
    }

    @Override
    public ToolchainsBuildingRequest setGlobalToolchainsSource(Source globalToolchainsSource) {

@Deprecated(since = "4.0.0")
public interface ToolchainsBuildingRequest {

    /**
     * Gets the global toolchains source.
     *
     * @return The global toolchains source or {@code null} if none.
     */
    Source getGlobalToolchainsSource();

    /**
     * Sets the global toolchains source. If both user toolchains and a global toolchains are given, the user toolchains
     * take precedence.
     *

        ProblemCollector problems = ProblemCollectorFactory.newInstance(null);

        PersistedToolchains globalToolchains = readToolchains(request.getGlobalToolchainsSource(), request, problems);

        PersistedToolchains userToolchains = readToolchains(request.getUserToolchainsSource(), request, problems);