*     Stream.of("banana", "apple", "carrot", "asparagus", "cherry")
   *         .collect(toImmutableListMultimap(str -> str.charAt(0), str -> str.substring(1)));
   *
   * // is equivalent to
   *
   * static final Multimap<Character, String> FIRST_LETTER_MULTIMAP =
   *     new ImmutableListMultimap.Builder<Character, String>()
   *         .put('b', "anana")
   *         .putAll('a', "pple", "sparagus")

   *     Stream.of("banana", "apple", "carrot", "asparagus", "cherry")
   *         .collect(toImmutableSetMultimap(str -> str.charAt(0), str -> str.substring(1)));
   *
   * // is equivalent to
   *
   * static final Multimap<Character, String> FIRST_LETTER_MULTIMAP =
   *     new ImmutableSetMultimap.Builder<Character, String>()
   *         .put('b', "anana")
   *         .putAll('a', "pple", "sparagus")

http:a:******@****.***  s:http u:a pass:b h:www.example.com p:/
http:/a:******@****.***  s:http u:a pass:b h:www.example.com p:/
http://a:******@****.***  s:http u:a pass:b h:www.example.com p:/
http://@pple.com  s:http h:pple.com p:/
http::******@****.***  s:http pass:b h:www.example.com p:/
http:/:******@****.***  s:http pass:b h:www.example.com p:/
http://:******@****.***  s:http pass:b h:www.example.com p:/

<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>keychain-access-groups</key>
	<array><string>` + appID + `</string></array>
	<key>get-task-allow</key>
	<true/>
	<key>application-identifier</key>
	<string>` + appID + `</string>
	<key>com.apple.developer.team-identifier</key>
	<string>` + teamID + `</string>

        pw.println("                                 cantaloupe, watermelon, \\");
        pw.println("                                 kiwi, mango");

        java.util.Properties p = new java.util.Properties();
        p.load(new StringReader(sw.toString()));
        Object o24 = p.getProperty("fruits");

   * | `http://host/?`                   | `""`                   |
   * | `http://host/?a=apple&k=key+lime` | `"a=apple&k=key+lime"` |
   * | `http://host/?a=apple&a=apricot`  | `"a=apple&a=apricot"`  |
   * | `http://host/?a=apple&b`          | `"a=apple&b"`          |
   */
  @get:JvmName("encodedQuery")
  val encodedQuery: String?
    get() {

Query)}(this,function(a){!function(a,b){"use strict";a.formUtils.registerLoadedModule("lang/cs"),a(b).bind("validatorsLoaded",function(){a.formUtils.LANG={errorTitle:"Podání formuláře selhalo!",requiredField:"Toto pole je povinné",requiredfields:"Nebyly vyplněny všechny požadované pole",badTime:"Neplatný čas",badEmail:"Neplatná e-mailová adresa",badTelephone:"Neplatné telefonní číslo",badSecurityAnswer:"Chybná odpověď na bezpečnostní otázku",badDate:"Nesprávné datum",lengthBadStart:"Zadaná hodnota...

  SortedMap<String, Integer> createUnfiltered() {
    return Maps.newTreeMap();
  }

  public void testFirstAndLastKeyFilteredMap() {
    SortedMap<String, Integer> unfiltered = createUnfiltered();
    unfiltered.put("apple", 2);
    unfiltered.put("banana", 6);
    unfiltered.put("cat", 3);
    unfiltered.put("dog", 5);

    SortedMap<String, Integer> filtered = Maps.filterEntries(unfiltered, CORRECT_LENGTH);

    public void test_entrySet_with_lang_key() {
        Map<String, Object> parentMap = new LinkedHashMap<>();
        DocMap docMap = new DocMap(parentMap);

        docMap.put("zebra", "value1");
        docMap.put("apple", "value2");
        docMap.put("lang", "ja");
        docMap.put("banana", "value3");

        Set<Map.Entry<String, Object>> entrySet = docMap.entrySet();
        assertEquals(4, entrySet.size());

Mas primeiro, vamos verificar alguns pequenos conceitos.

## Está com pressa? { #in-a-hurry }

Se você não se importa com qualquer um desses termos e só precisa adicionar segurança com autenticação baseada em usuário e senha _agora_, pule para os próximos capítulos.

## OAuth2 { #oauth2 }

OAuth2 é uma especificação que define várias formas para lidar com autenticação e autorização.