public ExtractData getText(final InputStream in, final Map<String, String> params) {
        final String resourceName = params == null ? null : params.get(ExtractData.RESOURCE_NAME_KEY);

        String extention;
        String filePrefix;
        if (StringUtil.isNotBlank(resourceName)) {
            final String name = getFileName(resourceName);
            final String[] strings = name.split("\\.");

        }

        final String resourceName = params == null ? null : params.get(ExtractData.RESOURCE_NAME_KEY);

        String extension;
        String filePrefix;
        if (StringUtil.isNotBlank(resourceName)) {
            final String name = getFileName(resourceName);
            final String[] strings = name.split("\\.");

                }, contentEncoding, normalizeText);
                if (StringUtil.isBlank(content)) {
                    if (resourceName != null) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("retry without a resource name: {}", resourceName);
                        }
                        final Metadata metadata2 = createMetadata(null, contentType, contentEncoding, password);

        assertNotNull(keySet);
        assertTrue(keySet.isEmpty());
    }

    public void test_predefinedConstants() {
        // Test predefined constants
        assertEquals("resourceName", ExtractData.RESOURCE_NAME_KEY);
        assertEquals("url", ExtractData.URL);
        assertEquals("file.passwords", ExtractData.FILE_PASSWORDS);
    }

    public void test_usingPredefinedConstants() {

- `kube-controller-manager`: Fixed...

crawler.hotthread.timeout=30s
# Type of hot thread monitoring (e.g., cpu).
crawler.hotthread.type=cpu
# Metadata fields to exclude from document content.
crawler.metadata.content.excludes=resourceName,X-Parsed-By,Content-Encoding.*,Content-Type.*,X-TIKA.*,X-FESS.*
# Mapping for document metadata names.
crawler.metadata.name.mapping=\
title=title:string\n\
Title=title:string\n\
dc:title=title:string\n\

    /** The key of the configuration. e.g. cpu */
    String CRAWLER_HOTTHREAD_TYPE = "crawler.hotthread.type";

    /** The key of the configuration. e.g. resourceName,X-Parsed-By,Content-Encoding.*,Content-Type.*,X-TIKA.*,X-FESS.* */
    String CRAWLER_METADATA_CONTENT_EXCLUDES = "crawler.metadata.content.excludes";

    /** The key of the configuration. e.g. title=title:string<br>