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.

`Body` also returns objects of a subclass of `FieldInfo` directly. And there are others you will see later that are subclasses of the `Body` class.

import com.google.common.collect.Lists;
import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.AnnotatedNotAbstractInSuperclassTest.SubClass;
import java.util.List;

public class AnnotatedNotAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> notOverriddenInSubclassEvents = Lists.newArrayList();

import java.util.List;

public class AbstractNotAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    public abstract void overriddenInSubclassNowhereAnnotated(Object o);

    public abstract void overriddenAndAnnotatedInSubclass(Object o);
  }

  static class SubClass extends SuperClass {

import com.google.common.collect.Lists;
import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.NeitherAbstractNorAnnotatedInSuperclassTest.SubClass;
import java.util.List;

public class NeitherAbstractNorAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> neitherOverriddenNorAnnotatedEvents = Lists.newArrayList();

import java.util.List;

public class AnnotatedAndAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    @Subscribe
    public abstract void overriddenAndAnnotatedInSubclass(Object o);

    @Subscribe
    public abstract void overriddenInSubclass(Object o);
  }

  static class SubClass extends SuperClass {

import java.util.List;

public class AnnotatedAndAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    @Subscribe
    public abstract void overriddenAndAnnotatedInSubclass(Object o);

    @Subscribe
    public abstract void overriddenInSubclass(Object o);
  }

  static class SubClass extends SuperClass {

import com.google.common.collect.Lists;
import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.NeitherAbstractNorAnnotatedInSuperclassTest.SubClass;
import java.util.List;

public class NeitherAbstractNorAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> neitherOverriddenNorAnnotatedEvents = Lists.newArrayList();

  public void testSubtypeOfInnerClass_nonStaticAnonymousClass() {
    TypeToken<?> supertype = new TypeToken<Mall<Outdoor>.Shop<Electronics>>() {};
    Class<?> subclass = new Mall<Outdoor>().new Shop<Electronics>() {}.getClass();
    assertTrue(TypeToken.of(subclass).isSubtypeOf(supertype));
  }

  @SuppressWarnings("RestrictedApiChecker") // crashes under JDK8, which EP no longer supports

import java.util.List;

public class AbstractNotAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    public abstract void overriddenInSubclassNowhereAnnotated(Object o);

    public abstract void overriddenAndAnnotatedInSubclass(Object o);
  }

  static class SubClass extends SuperClass {

* Decompressing gzip-compressed request bodies.
* Automatically logging all request bodies.

## Handling custom request body encodings

Let's see how to make use of a custom `Request` subclass to decompress gzip requests.

And an `APIRoute` subclass to use that custom request class.

### Create a custom `GzipRequest` class

/// tip