/**
     * Trims space characters from the value.
     * @param value The value to trim.
     * @return The trimmed value.
     */
    protected String trimSpace(final String value) {
        if (trimSpaceEnabled) {
            final Matcher matcher = SPACE_PATTERN.matcher(value);
            return matcher.replaceAll(" ").trim();
        }
        return value;
    }

    /**

     *
     * @param key   the key of the feature
     * @param value the value of the feature
     */
    public void addFeature(final String key, final String value) {
        if (StringUtil.isBlank(key) || StringUtil.isBlank(value)) {
            throw new CrawlerSystemException("key or value is null.");
        }

        featureMap.put(key, value);
    }

    /**
     * Adds a property to the extractor.

        String key = "key";
        int value = 1;
        settings.set(key, value);
        assertEquals(value, settings.getAsInt(key, -1));
    }

    @Test
    public void test_setAndGetAsLong() {
        String key = "key";
        long value = Long.MAX_VALUE;
        settings.set(key, value);
        assertEquals(value, settings.getAsLong(key, -1));
    }

    @Test

            final String key = e.getKey();
            Object value = e.getValue();
            if (value == null) {
                value = StringUtil.EMPTY;
            }
            if (value instanceof String || value == null) {
                return new Pair<>(key, value);
            }
            if (arrayFieldSet.contains(key)) {
                if (value instanceof String[]) {

{* ../../docs_src/query_params/tutorial001.py hl[9] *}

The query is the set of key-value pairs that go after the `?` in a URL, separated by `&` characters.

For example, in the URL:

```
http://127.0.0.1:8000/items/?skip=0&limit=10
```

...the query parameters are:

* `skip`: with a value of `0`
* `limit`: with a value of `10`

As they are part of the URL, they are "naturally" strings.

 *
 * @param <T1>
 *            The type of the first value
 * @param <T2>
 *            The type of the second value
 * @param <T3>
 *            The type of the third value
 * @param <T4>
 *            The type of the fourth value
 */
public class Tuple4<T1, T2, T3, T4> {

    /** The first value */
    protected T1 value1;

    /** The second value */
    protected T2 value2;

    /** The third value */

		Locale:  "ZH",
		Subject: "subject",
		Body:    "body",
		Tags: []Tag{
			{Locale: "ZH", Value: "tag1"},
			{Locale: "ZH", Value: "tag2"},
		},
	}

	DB.Save(&blog)
	if !compareTags(blog.Tags, []string{"tag1", "tag2"}) {
		t.Fatalf("Blog should has two tags")
	}

	// Append
	tag3 := &Tag{Locale: "ZH", Value: "tag3"}
	DB.Model(&blog).Association("Tags").Append([]*Tag{tag3})

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="crawl"/>
        <jsp:param name="menuType" value="keyMatch"/>
    </jsp:include>
    <div class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="crawl"/>
        <jsp:param name="menuType" value="relatedContent"/>
    </jsp:include>
    <div class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">

     * @param list The list to add the group or role name to.
     * @param value The group or role name value.
     * @param useDomainServices Whether to use domain services for group resolution.
     */
    protected void addGroupOrRoleName(final List<String> list, final String value, final boolean useDomainServices) {
        list.add(value);
        if (useDomainServices && value.indexOf('@') >= 0) {
            final String[] values = value.split("@");