The `password` "flow" is one of the ways ("flows") defined in OAuth2, to handle security and authentication.

OAuth2 was designed so that the backend or API could be independent of the server that authenticates the user.

But in this case, the same **FastAPI** application will handle the API and the authentication.

So, let's review it from that simplified point of view:

/**
 * A future that, if it fails, may <i>optionally</i> provide access to the cause of the failure.
 *
 * <p>This class is used only for micro-optimization. Standard {@code Future} utilities benefit from
 * this optimization, so there is no need to specialize methods to return or accept this type
 * instead of {@code ListenableFuture}.
 *
 * <p>This class is GWT-compatible.
 *

# invalid config. We use --server-dry-run so no config is persisted.
- apiGroups: ["networking.istio.io"]
  verbs: ["create"]
  resources: ["gateways"]

# For storing CA secret
- apiGroups: [""]
  resources: ["secrets"]
  # TODO lock this down to istio-ca-cert if not using the DNS cert mesh config
  verbs: ["create", "get", "watch", "list", "update", "delete"]

# For status controller, so it can delete the distribution report configmap

    So let's focus on the main cases, where it could crash entirely in some particular cases **in the future**, and it still makes sense to restart it.

   * J2CL's EnumMap does not need the Class instance, so we can use Object.class instead. (Or we
   * could use null, but that messes with our nullness checking, including under J2KT. We could
   * probably work around it by changing how we annotate the J2CL EnumMap, but that's probably more
   * trouble than just using Object.class.)
   *
   * Then we declare the getters for these fields as @GwtIncompatible so that no one can try to use

import org.apache.maven.api.services.LookupException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @since 3.0
 */
// TODO The configuration for the lifecycle needs to be externalized so that I can use the annotations properly for the
// wiring and reference and external source for the lifecycle configuration.
@Named
@Singleton
public class DefaultLifecycles {

// UnmarshalJSON - decodes JSON data.
func (a *Args) UnmarshalJSON(data []byte) error {
	// subtype to avoid recursive call to UnmarshalJSON()
	type subArgs Args
	var so subArgs

	if err := json.Unmarshal(data, &so); err != nil {
		return err
	}

	oa := Args(so)
	if oa.URL == nil || oa.URL.String() == "" {
		*a = oa
		return nil
	}

	*a = oa
	return nil
}

// Opa - implements opa policy agent calls.

    private static final int RCV_BUF_SIZE = Config.getInt( "jcifs.smb1.netbios.rcv_buf_size", DEFAULT_RCV_BUF_SIZE );
    private static final int SO_TIMEOUT = Config.getInt( "jcifs.smb1.netbios.soTimeout", DEFAULT_SO_TIMEOUT );
    private static final int RETRY_COUNT = Config.getInt( "jcifs.smb1.netbios.retryCount", DEFAULT_RETRY_COUNT );

 *       than MEDIUM. And so on. These constants are set to conservative values, but even so, if
 *       there is ever any doubt, they can all be increased in one spot to rerun tests on slower
 *       platforms.
 *   <li>All threads generated must be joined inside each test case method (or {@code fail} to do
 *       so) before returning from the method. The {@code joinPool} method can be used to do this

Conversations in the chat systems are also not as easily searchable as in GitHub, so questions and answers might get lost in the conversation. And only the ones in GitHub count to become a [FastAPI Expert](fastapi-people.md#fastapi-experts){.internal-link target=_blank}, so you will most probably receive more attention in GitHub.