This *path operation*-specific OpenAPI schema is normally generated automatically by **FastAPI**, but you can also extend it.

/// tip

This is a low level extension point.

If you only need to declare additional responses, a more convenient way to do it is with [Additional Responses in OpenAPI](additional-responses.md).

///

You can extend the OpenAPI schema for a *path operation* using the parameter `openapi_extra`.

- JavaDoc required for public APIs
- License headers required (Apache 2.0)

### Testing

- **Structure**: `src/test/java/org/codelibs/fess/crawler/`
- **Base class**: Extend `PlainTestCase` from UTFlute
- **Test Resources**: `src/test/resources/`
- **Coverage Goal**: >80% line coverage

### Contributing

1. Fork repo, create feature branch
2. Make focused commits with tests

/**
 * This class provides a skeletal implementation of {@link Graph}. It is recommended to extend this
 * class rather than implement {@link Graph} directly.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @since 20.0
 */
public abstract class AbstractGraph<N> extends AbstractBaseGraph<N> implements Graph<N> {
  /** Constructor for use by subclasses. */
  public AbstractGraph() {}

/**
 * This class provides a skeletal implementation of the {@code Cache} interface to minimize the
 * effort required to implement this interface.
 *
 * <p>To implement a cache, the programmer needs only to extend this class and provide an
 * implementation for the {@link #get(Object)} and {@link #getIfPresent} methods. {@link
 * #getUnchecked}, {@link #get(Object, Callable)}, and {@link #getAll} are implemented in terms of

    }

    @Test
    public void test_inheritance() {
        assertTrue(MonitorTarget.class.isAssignableFrom(HotThreadMonitorTarget.class),
                "HotThreadMonitorTarget should extend MonitorTarget");
        assertTrue(TimeoutTarget.class.isAssignableFrom(HotThreadMonitorTarget.class),
                "HotThreadMonitorTarget should implement TimeoutTarget");
    }

    @Test
    public void test_constructor() {

/**
 * This class provides a skeletal implementation of the {@code Cache} interface to minimize the
 * effort required to implement this interface.
 *
 * <p>To implement a cache, the programmer needs only to extend this class and provide an
 * implementation for the {@link #get(Object)} and {@link #getIfPresent} methods. {@link
 * #getUnchecked}, {@link #get(Object, Callable)}, and {@link #getAll} are implemented in terms of

import com.google.common.collect.Maps;
import java.util.Map;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * This class provides a skeletal implementation of {@link ValueGraph}. It is recommended to extend
 * this class rather than implement {@link ValueGraph} directly.
 *
 * <p>The methods implemented in this class should not be overridden unless the subclass admits a
 * more efficient implementation.
 *

                FessActionValidator.class.getName());
    }

    @Test
    public void test_inheritance() {
        assertTrue("FessActionValidator should extend ActionValidator", ActionValidator.class.isAssignableFrom(FessActionValidator.class));
    }

    @Test
    public void test_constructorExists() {
        // Verify constructor exists with expected parameters
        try {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.internal.artifact;

/**
 * The keys for Maven specific properties of artifacts. These properties "extend" (or supplement) the Resolver
 * core properties defined in {@link org.eclipse.aether.artifact.ArtifactProperties}.
 *
 * @see org.eclipse.aether.artifact.ArtifactProperties
 * @since 4.0.0

 * constructed instance. To create session out of builder, use {@link SessionBuilder#build()}. For proper closing
 * of sessions, use {@link CloseableSession#close()} method on built instance(s).
 * <p>
 * Extend this class and override methods to customize, if needed.
 *
 * @since 4.0.0
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")