Notice that the input model is still validated.

So, if you want to receive partial updates that can omit all the attributes, you need to have a model with all the attributes marked as optional (with default values or `None`).

To distinguish from the models with all optional values for **updates** and models with required values for **creation**, you can use the ideas described in [Extra Models](extra-models.md){.internal-link target=_blank}.

By default, the temporary security credentials created by AssumeRoleWithClientGrants last for one hour. However, use the optional DurationSeconds parameter to specify the duration of the credentials. This value varies from 900 seconds (15 minutes) up to the maximum session duration of 365 days.

## API Request Parameters

### Token

import org.codelibs.fess.opensearch.config.exentity.FileConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.render.RenderData;

   * any, specified by {@code endpoints}), if one is present; otherwise, returns {@code
   * Optional.empty()}.
   *
   * @throws IllegalArgumentException if {@code nodeU} or {@code nodeV} is not an element of this
   *     graph
   * @since 23.0 (since 20.0 with return type {@code V})
   */
  Optional<V> edgeValue(N nodeU, N nodeV);

  /**

import org.codelibs.fess.dict.mapping.CharMappingItem;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.render.RenderData;

    return flags.entries
        .map { entry ->
            entry.key.map {
                when (it) {
                    true -> Optional.of(entry.value)
                    false -> Optional.empty()
                }
            }.orElse(provider {
                throw GradleException("Expected boolean flag to be configured")
            })
        }

      description: |
        Please describe the problem as concisely as possible.
    validations:
      required: true
  - type: textarea
    id: context
    attributes:
      label: Context (optional)
      description: |
        How has this issue affected you? What are you trying to accomplish?
        Providing context helps us come up with a solution that is most useful in the real world
    validations:

```

</div>

/// note

When you install with `pip install "fastapi[standard]"` it comes with some default optional standard dependencies, including `fastapi-cloud-cli`, which allows you to deploy to <a href="https://fastapicloud.com" class="external-link" target="_blank">FastAPI Cloud</a>.

If you don't want to have those optional dependencies, you can instead install `pip install fastapi`.

        default:
            break;
        }
        return null;
    }

    /**
     * Creates an HTML response for the list page with optional pre-processing.
     *
     * @param runnable optional runnable to execute before rendering (can be null)
     * @return HTML response for the search request list page
     */
    private HtmlResponse asListHtml(final Runnable runnable) {

import org.codelibs.fess.opensearch.config.exentity.BoostDocumentRule;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.render.RenderData;