*/
public interface ToolchainPrivate extends Toolchain {

    /**
     * Let the toolchain decide if it matches requirements defined
     * in the toolchain plugin configuration.
     * @param requirements Map<String, String> key value pair, may not be {@code null}
     * @return {@code true} if the requirements match, otherwise {@code false}
     */
    boolean matchesRequirements(Map<String, String> requirements);

    /**

                    type.getLanguage().id(),
                    type.getPathTypes().contains(JavaPathType.CLASSES));
            // TODO: watch out for module path
        });

        // Note: here, type decides is artifact added to "build path" (for example during resolution)
        // and "build path" is intermediate data that is used to create actual Java classpath/modulepath

            hashString.append(md.getArtifactScope()).append('|');
        }

        return hashString.toString().hashCode();

        // BASE64Encoder b64 = new BASE64Encoder();
        // return b64.encode( hashString.toString().getBytes() ).hashCode();
    }

    // ---------------------------------------------------------------------
    // ---------------------------------------------------------------------

 * <li>success with warnings - model field + non-error model problems
 * <li>error - no model, but diagnostics
 * <li>error - (partial) model and diagnostics
 * </ol>
 * Could encode these variants as subclasses, but kept in one for now
 *
 * @param <T> the model type
 */
public class Result<T> {

    /**
     * Success without warnings
     *
     * @param model
     */