} finally {
            if (dfos != null && !dfos.isInMemory()) {
                final File file = dfos.getFile();
                if (!file.delete()) {
                    logger.warn("Failed to delete {}.", file.getAbsolutePath());
                }
            }
        }

    }

    protected String getMimeType(final DeferredFileOutputStream out) throws IOException {

        return dataHelper.getAccessResultMap(sessionId).size();
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.service.DataService#delete(java.lang.String)
     */
    @Override
    public void delete(final String sessionId) {
        dataHelper.deleteAccessResultMap(sessionId);
    }

    /*
     * (non-Javadoc)
     *

        return asJson(
                new ApiUpdateResponse().id(doc.get(fessConfig.getIndexFieldDocId()).toString()).created(false).status(Status.OK).result());
    }

    // DELETE /api/admin/searchlist/doc/{doc_id}
    @Execute
    public JsonResponse<ApiResult> delete$doc(final String id) {
        try {
            final QueryBuilder query = QueryBuilders.termQuery(fessConfig.getIndexFieldDocId(), id);

	// 3. g1 tx exec insert, wait for unlock `conn.PrepareContext(ctx, query)` to finish tx and release.
	stmt, err := conn.PrepareContext(ctx, query)
	if err != nil {
		cacheStmt.prepareErr = err
		db.Mux.Lock()
		delete(db.Stmts, query)
		db.Mux.Unlock()
		return Stmt{}, err
	}

	db.Mux.Lock()
	cacheStmt.Stmt = stmt
	db.Mux.Unlock()

	return cacheStmt, nil
}

need it so that empty directory does not get deleted...

#!/bin/bash

# The website is built using MkDocs with the Material theme.
# https://squidfunk.github.io/mkdocs-material/
# It requires python3 to run.

set -ex

REPO="******@****.***:square/okhttp.git"
DIR=temp-clone

# Delete any existing temporary website clone
rm -rf $DIR

# Clone the current repo into temp folder
git clone $REPO $DIR
# Replace `git clone` with these lines to hack on the website locally
# cp -a . "../okhttp-website"

        docId = button.data("docid"),
        title = button.data("title"),
        url = button.data("url");

    $(this)
      .find(".modal-body #delete-doc-title")
      .text(title);
    $(this)
      .find(".modal-body #delete-doc-url")
      .text(url);
    $(this)
      .find(".modal-footer input#docId")
      .val(docId);
  });

        boostDocumentRuleBhv.insertOrUpdate(boostDocumentRule, op -> op.setRefreshPolicy(Constants.TRUE));

    }

    public void delete(final BoostDocumentRule boostDocumentRule) {

        boostDocumentRuleBhv.delete(boostDocumentRule, op -> op.setRefreshPolicy(Constants.TRUE));

    }

    protected void setupListCondition(final BoostDocumentRuleCB cb, final BoostDocPager boostDocumentRulePager) {

        requestHeaderBhv.insertOrUpdate(requestHeader, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }

    public void delete(final RequestHeader requestHeader) {

        requestHeaderBhv.delete(requestHeader, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }

        webAuthenticationBhv.insertOrUpdate(webAuthentication, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }

    public void delete(final WebAuthentication webAuthentication) {

        webAuthenticationBhv.delete(webAuthentication, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }