@Deprecated(since = "4.0.0")
public class UrlSource implements Source {

    private final URL url;

    private final int hashCode;

    /**
     * Creates a new source backed by the specified URL.
     *
     * @param url The file, must not be {@code null}.
     */
    public UrlSource(URL url) {
        this.url = Objects.requireNonNull(url, "url cannot be null");
        this.hashCode = Objects.hashCode(url);
    }

    @Override

 */
@Deprecated
public interface ToolchainsBuilder {

    /**
     * Builds the toolchains model from the configured toolchain files.
     *
     * @param userToolchainsFile The path to the toolchains file, may be <code>null</code> to disable parsing.
     * @return The toolchains model or <code>null</code> if no toolchain file was configured or the configured file does

    /**
     * Creates a new message builder.
     * @return a new message builder
     */
    @Nonnull
    MessageBuilder builder();

    /**
     * Creates a new message builder of the specified size.
     * @param size the initial size of the message builder buffer
     * @return a new message builder
     */
    @Nonnull
    MessageBuilder builder(int size);

     * caller intends to make updates to the model the return value must be cloned before updating to ensure the
     * modifications don't affect future retrievals of the super POM.
     *
     * @param version The model version to retrieve the super POM for (e.g. "4.0.0"), must not be {@code null}.
     * @return The super POM, never {@code null}.
     */
    Model getSuperModel(String version);

        return copyProperties(System.getProperties());
    }

    /**
     * Copies the given {@link Properties} object into a new {@link Properties} object, in a thread-safe manner.
     * @param properties Properties to copy.
     * @return Copy of the given properties.
     */
    public static Properties copyProperties(Properties properties) {
        final Properties copyProperties = new Properties();

 *     public Collection<Language> provides() {
 *         return Arrays.asList(
 *             language("kotlin"),
 *             language("scala")
 *         );
 *     }
 * }
 * </pre>
 *
 * @param <T> The type of extensible enum to extend
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface ExtensibleEnumProvider<T extends ExtensibleEnum> extends SpiService {

    /**

     * This method is responsible for executing the Maven command or build
     * process based on the information contained in the request.
     *
     * @param invokerRequest the request containing all necessary information for the invocation
     * @return an integer representing the exit code of the invocation (0 typically indicates success)

     * <li>point either at file or directory, in the latter case POM file name 'pom.xml' needs to be used by the
     * requested model source.</li>
     * </ul>
     *
     * @param relPath is the path of the requested model source relative to this model source POM.
     * @return related model source or <code>null</code> if no such model source.
     */
    ModelSource2 getRelatedSource(String relPath);

`Field` works the same way as `Query`, `Path` and `Body`, it has all the same parameters, etc.

/// note | Technical Details

Actually, `Query`, `Path` and others you'll see next create objects of subclasses of a common `Param` class, which is itself a subclass of Pydantic's `FieldInfo` class.

And Pydantic's `Field` returns an instance of `FieldInfo` as well.

    String getLocation();

    boolean isAddDefaultEntities();

    interface Transformer {
        /**
         * Interpolate the value read from the xml document
         *
         * @param source    The source value
         * @param fieldName A description of the field being interpolated. The implementation may use this to
         *                  log stuff.
         * @return the interpolated value
         */