<img src="/img/tutorial/extending-openapi/image04.png">

## Change Default Swagger UI Parameters { #change-default-swagger-ui-parameters }

FastAPI includes some default configuration parameters appropriate for most of the use cases.

It includes these default configurations:

{* ../../fastapi/openapi/docs.py ln[9:24] hl[18:24] *}

     *
     * @return timeout for establishing a socket connection, in milliseconds
     */
    int getConnTimeout();

    /**
     * Property {@code jcifs.smb.client.sessionTimeout} (int, default 35000)
     *
     *
     * @return timeout for SMB sessions, in milliseconds
     */
    int getSessionTimeout();

    /**
     *

    }

    /**
     * LSA Quality of Service information.
     */
    public static class LsarQosInfo extends NdrObject {

        /**
         * Default constructor for LsarQosInfo.
         */
        public LsarQosInfo() {
            // Default constructor
        }

        /** Length of the QoS information. */
        public int length;
        /** Security impersonation level. */

# o isSuppressSchemaHtmlProcedure: (NotRequired - Default false)
# o historyHtmlFileName: (NotRequired - Default 'history-[project-name].html')
# o isCheckColumnDefOrderDiff: (NotRequired - Default false)
# o isCheckDbCommentDiff: (NotRequired - Default false)
# o isCheckProcedureDiff: (NotRequired - Default false)
# o loadDataReverseMap: (NotRequired - Default map:{})
# o schemaSyncCheckMap: (NotRequired - Default map:{})

    @Nonnull
    Path userHomeDirectory();

    /**
     * Shorthand for {@link MessageBuilderFactory}.
     */
    default MessageBuilderFactory messageBuilderFactory() {
        return parserRequest().messageBuilderFactory();
    }

    /**
     * Shorthand for {@link Lookup}.
     */
    default Lookup lookup() {
        return parserRequest().lookup();
    }

    /**

    /** The maximum cached content size in bytes. Default is 1MB. */
    protected long maxCachedContentSize = 1024L * 1024L; // 1MB

    /** The access timeout in seconds. Default is null (no timeout). */
    protected Integer accessTimeout = null; // seconds

    /** The maximum content length in bytes. Default is null (no limit). */
    protected Long maxContentLength = null;

    /**

#
# Adjustment Properties:
# o generateOutputDirectory: (NotRequired - Default Java:'../src/main/java' CSharp:'../source')
# o resourceOutputDirectory: (NotRequired - Default '../resources')
# o isTableNameCamelCase: (NotRequired - Default false)
# o isColumnNameCamelCase: (NotRequired - Default false)
# o projectPrefix: (NotRequired - Default '')
# o classAuthor: (NotRequired - Default 'DBFlute(AutoGenerator)')

 * capabilities to the default HTTPS handler. This acts as a wrapper,
 * handling authentication and passing control to the underlying
 * stream handler.
 *
 * @deprecated {@link NtlmHttpURLConnection} is broken by design.
 */
@Deprecated
public class Handler extends jcifs.http.Handler {

    /**
     * The default HTTPS port (<code>443</code>).
     */

    @Nonnull
    Toolchain createToolchain(@Nonnull ToolchainModel model) throws ToolchainFactoryException;

    /**
     * Creates a default toolchain instance using system defaults.
     *
     * @return Optional containing the default toolchain if available
     * @throws ToolchainFactoryException if default toolchain creation fails
     */
    @Nonnull
    Optional<Toolchain> createDefaultToolchain() throws ToolchainFactoryException;

#d6d8db;\n}\n\n.alert-default-secondary hr {\n  border-top-color: #c8cbcf;\n}\n\n.alert-default-secondary .alert-link {\n  color: #202326;\n}\n\n.alert-success {\n  color: #fff;\n  background-color: #28a745;\n  border-color: #23923d;\n}\n\n.alert-default-success {\n  color: #155724;\n  background-color: #d4edda;\n  border-color: #c3e6cb;\n}\n\n.alert-default-success hr {\n  border-top-color: #b1dfbb;\n}\n\n.alert-default-success .alert-link {\n  color: #0b2e13;\n}\n\n.alert-info {\n  color: #fff;\n...