docMap.put("_id", "nonexistent");

        File result = thumbnailManager.getThumbnailFile(docMap);
        assertNull(result);
    }

    // Test getThumbnailFile with blank path
    public void test_getThumbnailFile_blankPath() {
        Map<String, Object> docMap = new HashMap<>();
        // No _id field, so docid will be null

            return LaRequestUtil.getOptionalRequest().map(request -> {
                final String userAgent = request.getHeader("user-agent");
                if (StringUtil.isBlank(userAgent)) {
                    return false;
                }

                return pathMapping.getUAMatcher(userAgent).find();
            }).orElse(false);
        }
        return false;
    }

            }
            builder.endObject();
            return builder;
        }, XContentType.JSON)) {
            message = ((ByteArrayOutputStream) out).toString(Constants.UTF_8);
            if (StringUtil.isBlank(message)) {
                message = "{}";
            }
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Gets the status.

        corsFilter.doFilter(mockRequest, mockResponse, mockFilterChain);

        assertTrue(mockFilterChain.wasDoFilterCalled());
        assertFalse(corsHandlerFactory.wasGetCalled());
    }

    // Test with blank Origin header
    public void test_doFilter_blankOriginHeader() throws IOException, ServletException {
        mockRequest.setHeader("Origin", "");

        corsFilter.doFilter(mockRequest, mockResponse, mockFilterChain);

the body of any nested function.
</p>


<h3 id="Blank_identifier">Blank identifier</h3>

<p>
The <i>blank identifier</i> is represented by the underscore character <code>_</code>.
It serves as an anonymous placeholder instead of a regular (non-blank)
identifier and has special meaning in <a href="#Declarations_and_scope">declarations</a>,

     * @return The script type.
     */
    protected String getScriptType(final DataStoreParams paramMap) {
        final String value = paramMap.getAsString(SCRIPT_TYPE);
        if (StringUtil.isBlank(value)) {
            return Constants.DEFAULT_SCRIPT;
        }
        return value;
    }

    /**
     * Convert the value.
     * @param scriptType The script type.

        LdapUser user = new LdapUser(emptyEnv, "user");
        assertTrue(user.getEnvironment().isEmpty());
    }

    public void test_getPermissions_withoutLdapConfig() {
        // Test when baseDn or accountFilter is blank
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override
            public String getLdapBaseDn() {
                return "";
            }

            @Override

            dfos = out;
            CopyUtil.copy(in, out);
            out.flush();

            Extractor extractor = StringUtil.isBlank(mimeType) ? null : extractorFactory.getExtractor(mimeType);
            if (extractor == null) {
                final String detectedMimeType = getMimeType(out);

					<div class="me-3">
						<a class="link d-none d-sm-flex" href="${doc.url_link}" data-uri="${doc.url_link}" data-id="${doc.doc_id}"
							data-order="${s.index}"
						> <img src="${fe:url('/images/blank.png')}" alt="thumbnail"
							data-src="${fe:url('/thumbnail/')}?docId=${f:u(doc.doc_id)}&queryId=${f:u(queryId)}" class="thumbnail"
						>
						</a>
					</div>
					</c:if>

                    groupId, artifactId, getVersion(), type, "The version cannot be empty.");
        }
    }

    public static boolean empty(String value) {
        return value == null || value.isBlank();
    }

    @Override
    public String getClassifier() {
        return classifier;
    }

    @Override
    public boolean hasClassifier() {