playsql    : Directory for ReplaceSchema task
schema     : Directory for files of schema info
- - - - - - - - - -/

The files, _project.bat, _project.sh, build.properties
are for internal processes of DBFlute tasks so basically

    /**
     * Set of fully qualified class names that have been processed and contain the {@link Named} annotation.
     */
    private final Set<String> processedClasses = new HashSet<>();

    /**
     * Processes classes with the {@link Named} annotation and generates an index file.
     *
     * @param annotations the annotation types requested to be processed

     * @param query the Lucene query to be processed
     * @param boost the boost factor to apply to the query
     * @return the processed OpenSearch QueryBuilder
     */
    public QueryBuilder execute(final QueryContext context, final Query query, final float boost) {
        return filterChain.execute(context, query, boost);
    }

    /**
     * Adds a query command to the processor.
     *

     *
     * @param context the Tomcat context for this web resource root
     */
    public FessWebResourceRoot(final Context context) {
        super(context);
    }

    /**
     * Processes WEB-INF/lib directory and additionally scans WEB-INF/plugin for Fess plugins.
     * This method extends the standard processing to include plugin JAR files that contain
     * the "Fess-WebAppJar" manifest attribute.
     *

    // PUT /api/admin/elevateword/upload
    /**
     * Uploads and imports elevate words from a CSV file.
     * Processes the file asynchronously and updates the suggest helper.
     *
     * @param body upload form containing the CSV file
     * @return JSON response with upload status
     */
    @Execute
    public JsonResponse<ApiResult> put$upload(final UploadForm body) {
        validateApi(body, messages -> {});

            LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(FessConfig.VIRTUAL_HOST_VALUE, value));
            return value;
        });
    }

    /**
     * Processes virtual host configuration by applying a function to the matched virtual host key.
     *
     * @param <T> The return type of the function
     * @param func The function to apply to the virtual host key

import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.StreamResponse;

import jakarta.annotation.Resource;

/**
 * Action class for handling document redirection requests.
 * This action processes "go" requests that redirect users to specific documents
 * while tracking click events and handling various URL types including file system paths.
 */
public class GoAction extends FessSearchAction {

    /**

     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {
        return OptionalThing.empty();
    }

    /**
     * Pre-processes API requests by checking access authorization before executing the action.
     * If access is not allowed, returns an unauthorized error response.
     *

   * for cross-language compatibility. For other use cases, prefer {@link #putUnencodedChars}, which
   * is faster, produces the same output across Java releases, and processes every {@code char} in
   * the input, even if some are invalid.
   */
  @CanIgnoreReturnValue
  PrimitiveSink putString(CharSequence charSequence, Charset charset);

**Only one process** in the server can be listening on a specific **port** in a specific **IP address**. There could be other processes listening on other ports in the same IP address, but only one for each combination of IP address and port.

TLS (HTTPS) uses the specific port `443` by default. So that's the port we would need.