import java.nio.file.Path;

import org.apache.maven.model.Model;

/**
 * Context used to transform a pom file.
 *
 * @since 4.0.0
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface TransformerContext {
    /**
     * Key to get the TransformerContext from the SessionData
     */
    Object KEY = TransformerContext.class;

    /**

     * @return if the artifact can be added to the class path
     *
     * @deprecated A value of {@code true} does not mean that the dependency should
     * be placed on the classpath. See {@code JavaPathType} instead for better analysis.
     */
    @Deprecated
    boolean isAddedToClasspath();

/**
 * Maven local GAV level metadata generator.
 * <p>
 * Local snapshot metadata contains non-transformed snapshot version.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")
class LocalSnapshotMetadataGenerator implements MetadataGenerator {

    private final Map<Object, LocalSnapshotMetadata> snapshots;

    private final Date timestamp;

```Python hl_lines="7  21  23"
{!../../docs_src/custom_response/tutorial004.py!}
```

In this example, the function `generate_html_response()` already generates and returns a `Response` instead of returning the HTML in a `str`.

By returning the result of calling `generate_html_response()`, you are already returning a `Response` that will override the default **FastAPI** behavior.

 * supplied column keys. The {@code remove} and {@code clear} methods are not supported by the table
 * or its views. The {@link #erase} and {@link #eraseAll} methods may be used instead.
 *
 * <p>The ordering of the row and column keys provided when the table is constructed determines the
 * iteration ordering across rows and columns in the table's views. None of the view iterators

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

/**
 * Locates a POM file within a project base directory.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultModelLocator implements ModelLocator {

    @Deprecated
    @Override
    public File locatePom(File projectDirectory) {

 * {@code true}.
 *
 * @see org.eclipse.aether.artifact.Artifact#getProperties()
 * @see MavenArtifactProperties
 * @since 4.0.0
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")
public final class FatArtifactTraverser implements DependencyTraverser {

    public FatArtifactTraverser() {}

    @Override

 * as desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator
 * pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations
 * invoke methods, they invoke methods on the {@code ForwardingBlockingQueue}.
 *
 * @author Raimundo Mirisola

 * representation for models that physically look different but are semantically equivalent.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ModelNormalizer {

    /**
     * Merges duplicate elements like multiple declarations of the same build plugin in the specified model.
     *

So, it involves I/O (input/output), that requires "waiting" for things to be written to disk.

But `open()` doesn't use `async` and `await`.

So, we declare the event handler function with standard `def` instead of `async def`.

///

### `startup` and `shutdown` together