/**
   * Returns the contained instance if it is present; {@code defaultValue} otherwise. If no default
   * value should be required because the instance is known to be present, use {@link #get()}
   * instead. For a default value of {@code null}, use {@link #orNull}.
   *
   * <p>Note about generics: The signature {@code public T or(T defaultValue)} is overly

        override val currentFile: File,

        override val currentSourceRoot: File

    ) : ApiSourceFile()
}


internal
data class JavaSourceQuery<T : Any?>(
    val defaultValue: T,
    val visitor: GenericVisitor<T, Unit?>
)


internal
class SourcesRepository(

    private
    val sourceRoots: List<File>,

    private
    val compilationClasspath: List<File>

     * {@link org.codelibs.core.lang.ObjectUtil#defaultValue(Object, Object)} .
     */
    @Test
    public void testDefaultValue() {
        final Hoge hoge = new Hoge();
        assertSame(ObjectUtil.defaultValue(null, hoge), hoge);
        assertSame(ObjectUtil.defaultValue(hoge, null), hoge);
        assertSame(ObjectUtil.defaultValue(hoge, hoge), hoge);
        assertSame(ObjectUtil.defaultValue(null, null), null);

import java.util.Optional;
import java.util.function.Supplier;

public class Util {

    public static boolean getBooleanProperty(String property, boolean defaultValue) {
        String propertyValue = System.getProperty(property);
        if (propertyValue == null) {
            return defaultValue;
        }
        if ("true".equals(propertyValue)) {
            return true;
        } else if ("false".equals(propertyValue)) {

   * determined.
   */
  public static <T> @Nullable T get(Class<T> type) {
    T defaultValue = DEFAULTS.getInstance(type);
    if (defaultValue != null) {
      return defaultValue;
    }
    Class<? extends T> implementation = getImplementation(type);
    if (implementation != null) {
      return get(implementation);
    }

        promptBuilder
                .createConfirmPromp()
                .name("confirm")
                .message("Are values above correct?")
                .defaultValue(ConfirmChoice.ConfirmationValue.YES)
                .addPrompt();
        return promptBuilder;
    }

    protected PromptBuilder dispatcherPrompt(PromptBuilder promptBuilder) {

   * {@code void}, {@code null} is returned.
   */
  @SuppressWarnings({
    "unchecked",
    "BooleanLiteral" // `(T) false` would produce an error
  })
  public static <T> @Nullable T defaultValue(Class<T> type) {
    checkNotNull(type);
    if (type.isPrimitive()) {
      if (type == boolean.class) {
        return (T) Boolean.FALSE;
      } else if (type == char.class) {

     *
     * @param s a s object.
     * @param defaultValue a defaultValue object.
     * @param parser a parser object.
     * @param attribute a attribute object.
     * @throws XmlPullParserException XmlPullParserException if
     * any.
     * @return boolean
     */
    private boolean getBooleanValue(String s, String attribute, XmlPullParser parser, String defaultValue)
            throws XmlPullParserException {

            }
        }

        // Helper method from AbstractUpgradeStrategy
        private boolean isOptionEnabled(UpgradeOptions options, Optional<Boolean> option, boolean defaultValue) {
            // Handle --all option (overrides individual options)
            if (options.all().orElse(false)) {
                return true;
            }

   * determined.
   */
  public static <T> @Nullable T get(Class<T> type) {
    T defaultValue = DEFAULTS.getInstance(type);
    if (defaultValue != null) {
      return defaultValue;
    }
    Class<? extends T> implementation = getImplementation(type);
    if (implementation != null) {
      return get(implementation);
    }