logger.debug("loaded filetype: {}", mimetypeMap);
        }
    }

    /**
     * Adds or updates a MIME type to file type mapping.
     *
     * @param mimetype the MIME type to map (e.g., "application/pdf")
     * @param filetype the file type classification (e.g., "pdf")
     */
    public void add(final String mimetype, final String filetype) {
        mimetypeMap.put(mimetype, filetype);
    }

    /**

     */
    protected List<Throwable> failures = Collections.synchronizedList(new ArrayList<>());

    /**
     * Adds a Throwable to the list of failures.
     *
     * @param t the Throwable to add
     */
    public void addFailure(final Throwable t) {
        failures.add(t);
    }

    /**
     * Checks if there are any failures recorded.
     *

    @CanIgnoreReturnValue
    public abstract Builder<E> add(E element);

    /**
     * Adds each element of {@code elements} to the {@code ImmutableCollection} being built.
     *
     * <p>Note that each builder class overrides this method in order to covariantly return its own
     * type.
     *
     * @param elements the elements to add
     * @return this {@code Builder} instance

    }

    /**
     * Adds {@code element} to the {@code ImmutableSortedMultiset}.
     *
     * @param element the element to add
     * @return this {@code Builder} object
     * @throws NullPointerException if {@code element} is null
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<E> add(E element) {
      super.add(element);
      return this;
    }

    /**

            logger.debug("Loaded {} : {}", key, extractor.getClass().getName());
        }
    }

    /**
     * Adds an extractor to the factory for all keys in the provided list.
     *
     * @param keyList the list of keys to associate with the extractor
     * @param extractor the extractor to add
     * @throws CrawlerSystemException if the key list is null or empty, or if the extractor is null
     */

								<group>root</group>
							</mapper>
						</data>
						<!-- Adds systemd file -->
						<data>
							<type>file</type>
							<src>${project.build.directory}/generated-packaging/deb/systemd/fess.service</src>
							<dst>${packaging.fess.systemd.dir}/fess.service</dst>
						</data>
						<!-- Adds systemd/sysctl.d configuration file -->
						<data>
							<type>file</type>

   * element, and the overall size of the collection, by one.
   *
   * <p>To both add the element and obtain the previous count of that element, use {@link
   * #add(Object, int) add}{@code (element, 1)} instead.
   *
   * @param element the element to add one occurrence of; may be null only if explicitly allowed by
   *     the implementation
   * @return {@code true} always, since this call is required to modify the multiset, unlike other

     * performing adds and removes in different ways.
     */
    runConcurrentlyMutatedTest(elements(), ops(add(1), add(2)), wrap);

    runConcurrentlyMutatedTest(elements(), ops(add(1), nop()), wrap);

    runConcurrentlyMutatedTest(elements(), ops(add(1), remove()), wrap);

    runConcurrentlyMutatedTest(elements(), ops(nop(), add(1)), wrap);

                .of(stream -> stream.filter(StringUtil::isNotBlank).forEach(contentFieldNameSet::add));
        split(fessConfig.getSuggestFieldTags(), ",").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(tagFieldNameSet::add));
        split(fessConfig.getSuggestFieldRoles(), ",").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(roleFieldNameSet::add));

      value: String,
    ) = apply {
      headers[name] = value
    }

    /**
     * Adds a header with [name] to [value]. Prefer this method for multiply-valued
     * headers like "Set-Cookie".
     */
    open fun addHeader(
      name: String,
      value: String,
    ) = apply {
      headers.add(name, value)
    }

    /** Removes all headers named [name] on this builder. */