private static final String UPPER = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

  public void testToLowerCase() {
    assertEquals(LOWER, Ascii.toLowerCase(UPPER));
    assertSame(LOWER, Ascii.toLowerCase(LOWER));
    assertEquals(IGNORED, Ascii.toLowerCase(IGNORED));
    assertEquals("foobar", Ascii.toLowerCase("fOobaR"));
  }

  public void testToUpperCase() {
    assertEquals(UPPER, Ascii.toUpperCase(LOWER));

    }

    Alphabet lowerCase() {
      if (!hasUpperCase()) {
        return this;
      }
      checkState(!hasLowerCase(), "Cannot call lowerCase() on a mixed-case alphabet");
      char[] lowerCased = new char[chars.length];
      for (int i = 0; i < chars.length; i++) {
        lowerCased[i] = Ascii.toLowerCase(chars[i]);
      }
      Alphabet lowerCase = new Alphabet(name + ".lowerCase()", lowerCased);

  private static final String UPPER = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

  public void testToLowerCase() {
    assertEquals(LOWER, Ascii.toLowerCase(UPPER));
    assertSame(LOWER, Ascii.toLowerCase(LOWER));
    assertEquals(IGNORED, Ascii.toLowerCase(IGNORED));
    assertEquals("foobar", Ascii.toLowerCase("fOobaR"));
  }

  public void testToUpperCase() {
    assertEquals(UPPER, Ascii.toUpperCase(LOWER));

    return JavaUpperCase.INSTANCE;
  }

  /**
   * Determines whether a BMP character is lower case according to {@linkplain
   * Character#isLowerCase(char) Java's definition}.
   *
   * @deprecated Some lowercase characters are supplementary characters; see the class
   *     documentation.
   * @since 19.0 (since 1.0 as constant {@code JAVA_LOWER_CASE})
   */
  @Deprecated

  /** Constructor used to implement {@link #from(String)}, and from subclasses. */
  InternetDomainName(String name) {
    // Normalize:
    // * ASCII characters to lowercase
    // * All dot-like characters to '.'
    // * Strip trailing '.'

    name = Ascii.toLowerCase(DOTS_MATCHER.replaceFrom(name, '.'));

    if (name.endsWith(".")) {
      name = name.substring(0, name.length() - 1);
    }

    /** The key of the configuration. e.g. false */
    String LDAP_GROUP_NAME_WITH_UNDERSCORES = "ldap.group.name.with.underscores";

    /** The key of the configuration. e.g. false */
    String LDAP_LOWERCASE_PERMISSION_NAME = "ldap.lowercase.permission.name";

    /** The key of the configuration. e.g. true */
    String LDAP_ALLOW_EMPTY_PERMISSION = "ldap.allow.empty.permission";

    /** The key of the configuration. e.g. true */

    return JavaUpperCase.INSTANCE;
  }

  /**
   * Determines whether a BMP character is lower case according to {@linkplain
   * Character#isLowerCase(char) Java's definition}.
   *
   * @deprecated Some lowercase characters are supplementary characters; see the class
   *     documentation.
   * @since 19.0 (since 1.0 as constant {@code JAVA_LOWER_CASE})
   */
  @Deprecated

            assertTrue(doc.entrySet().stream()
                    .anyMatch(entry -> entry.getValue().toString().toLowerCase().contains(keywords[0].toLowerCase())), doc.toString());
            assertFalse(doc.entrySet().stream()
                    .anyMatch(entry -> entry.getValue().toString().toLowerCase().contains(keywords[2].toLowerCase())), doc.toString());
        }
    }

    @Test

                return true;
            });
        }
        return Collections.emptyList();
    }

    private String toLowerCase(final String term) {
        return term != null ? term.toLowerCase(Locale.ROOT) : term;
    }

        String actualOsName = context.getSystemProperties().get("os.name").toLowerCase(Locale.ENGLISH);
        String actualOsArch = context.getSystemProperties().get("os.arch").toLowerCase(Locale.ENGLISH);
        String actualOsVersion = context.getSystemProperties().get("os.version").toLowerCase(Locale.ENGLISH);

        if (active && os.getFamily() != null) {