So, even with the code above that doesn't use Pydantic explicitly, FastAPI is using Pydantic to convert those standard dataclasses to Pydantic's own flavor of dataclasses.

And of course, it supports the same:

* data validation
* data serialization
* data documentation, etc.

    # Custom annotations on pod level, if you need them
    podAnnotations: {}

    # Deploy the config files as plugin chain (value "true") or as standalone files in the conf dir (value "false")?
    # Some k8s flavors (e.g. OpenShift) do not support the chain approach, set to false if this is the case
    chained: true

    # Custom configuration happens based on the CNI provider.
    # Possible values: "default", "multus"

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

/**
 * <a href="https://guava.dev/EventBus">Discouraged</a> in favor of dependency injection and
 * concurrency frameworks, EventBus allows publish-subscribe-style communication.
 *
 * <p>See the Guava User Guide article on <a

	// TODO(gri) remove this check in favor of specialized lookup
	if pkg == nil {
		pkg = nopkg
	}
	if s := pkg.Syms[name]; s != nil {
		return s, true
	}

	s = &Sym{
		Name: name,
		Pkg:  pkg,
	}
	pkg.Syms[name] = s
	return s, false
}

func (pkg *Pkg) LookupBytes(name []byte) *Sym {
	// TODO(gri) remove this check in favor of specialized lookup
	if pkg == nil {
		pkg = nopkg
	}

For example, Google login uses OpenID Connect (which underneath uses OAuth2).

But Facebook login doesn't support OpenID Connect. It has its own flavor of OAuth2.

### OpenID (not "OpenID Connect")

There was also an "OpenID" specification. That tried to solve the same thing as **OpenID Connect**, but was not based on OAuth2.

So, it was a complete additional system.

// correctly with types2 at the moment. See go.dev/issue/52080.
// Make sure we keep testing them with go/types.
//
// TODO(gri) Once go.dev/issue/52080 is fixed, this file can be
//           deleted in favor of the re-enabled tests
//           in the shared file.

package p

func _() {
	var s uint

	_ = int32(0x80000000 /* ERROR "overflows int32" */ << s)
	// TODO(rfindley) Eliminate the redundant error here.

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

/**
 * <a href="https://guava.dev/EventBus">Discouraged</a> in favor of dependency injection and
 * concurrency frameworks, EventBus allows publish-subscribe-style communication.
 *
 * <p>See the Guava User Guide article on <a

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

/**
 * <a href="https://guava.dev/CacheBuilder">Discouraged</a> (in favor of <a
 * href="https://github.com/ben-manes/caffeine/wiki">Caffeine</a>) caching utilities.
 *
 * <p>The core interface used to represent caches is {@link Cache}. In-memory caches can be

     */
    void setExtraJvmArgs(Iterable<?> jvmArgs);


    /**
     * Checks supplied JVM arguments with purpose to ignore debug configuration in favor of the supplied arguments.
     */
    void checkDebugConfiguration(Iterable<?> arguments);

}

// waitFunc creates a channel that receives an item every time a test
// should be executed and is closed when the last test should be invoked.
//
// Deprecated: Will be removed in a future release in favor of
// loopConditionUntilContext.
type waitFunc func(done <-chan struct{}) <-chan struct{}

// WithContext converts the WaitFunc to an equivalent WaitWithContextFunc
func (w waitFunc) WithContext() waitWithContextFunc {