return (Class<T>) Class.forName(className, true, loader);
        } catch (final Throwable ignore) {
            return null;
        }
    }

    /**
     * If the class is a primitive type, returns its wrapper class.
     *
     * @param className
     *            The class name. Must not be {@literal null} or empty.
     * @return {@link Class}
     * @throws EmptyArgumentException

@NullMarked
public final class SerializableTester {
  private SerializableTester() {}

  /**
   * Serializes and deserializes the specified object.
   *
   * <p><b>GWT warning:</b> Under GWT, this method simply returns its input, as proper GWT
   * serialization tests require more setup. This no-op behavior allows test authors to intersperse
   * {@code SerializableTester} calls with other, GWT-compatible tests.
   *

import java.util.Collections;
import java.util.Iterator;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * A utility for testing an Iterator implementation by comparing its behavior to that of a "known
 * good" reference implementation. In order to accomplish this, it's important to test a great
 * variety of sequences of the {@link Iterator#next}, {@link Iterator#hasNext} and {@link

 * RegularImmutableBiMap}, which don't have to recopy the entries created by their {@code Builder}
 * implementations.
 *
 * <p>This base implementation has no key or value pointers, so instances of ImmutableMapEntry (but
 * not its subclasses) can be reused when copied from one ImmutableMap to another.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // unnecessary
class ImmutableMapEntry<K, V> extends SimpleImmutableEntry<K, V> {
  /**

   * navigable map is accomplished through the returned navigable map (or its views).
   *
   * <p>It is imperative that the user manually synchronize on the returned navigable map when
   * iterating over any of its collection views, or the collections views of any of its {@code
   * descendingMap}, {@code subMap}, {@code headMap} or {@code tailMap} views.
   *
   * {@snippet :

   * navigable map is accomplished through the returned navigable map (or its views).
   *
   * <p>It is imperative that the user manually synchronize on the returned navigable map when
   * iterating over any of its collection views, or the collections views of any of its {@code
   * descendingMap}, {@code subMap}, {@code headMap} or {@code tailMap} views.
   *
   * {@snippet :

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Enumeration of model versions that can be validated.

   * types (or if the type is a non-variable type, like {@code String}), then code should almost
   * never use this method, preferring instead to call {@code requireNonNull} so as to benefit from
   * its runtime check.
   *
   * <p>An example use case for this method is in implementing an {@code Iterator<T>} whose {@code
   * next} field is lazily initialized. The type of that field would be {@code @Nullable T}, and the

   * types (or if the type is a non-variable type, like {@code String}), then code should almost
   * never use this method, preferring instead to call {@code requireNonNull} so as to benefit from
   * its runtime check.
   *
   * <p>An example use case for this method is in implementing an {@code Iterator<T>} whose {@code
   * next} field is lazily initialized. The type of that field would be {@code @Nullable T}, and the

# About FastAPI versions { #about-fastapi-versions }

**FastAPI** is already being used in production in many applications and systems. And the test coverage is kept at 100%. But its development is still moving quickly.

New features are added frequently, bugs are fixed regularly, and the code is still continuously improving.