} catch (Exception e) { // sneaky checked exception
            throw new AssertionError(
                "Serialization failed on return value of " + factory, e.getCause());
          }
        }
      }
      return this;
    }

    /**
     * Runs equals and serialization test on the return values.
     *
     * <p>Test fails if default value cannot be determined for a constructor or factory method

          arraySize * Long.SIZE, BloomFilter.create(unencodedCharsFunnel(), i, fpp).bitSize());
    }
  }

  /**
   * Tests that bitSize() can be used to predict the serialization size produced by writeTo().
   *
   * <p>The serialization format consists of a 6-byte header (1 byte strategy, 1 byte hash
   * functions, 4 bytes array length) followed by the bit array data (bitSize / 8 bytes).
   */

        }
    }

    @Test
    public void test_serialVersionUID() {
        // Test that the exception is serializable
        StorageException exception = new StorageException("Test serialization");

        // Verify that the exception is serializable by checking it extends RuntimeException
        // which implements Serializable
        assertTrue(exception instanceof java.io.Serializable);
    }

   * were obtained by calling {@code snapshot()} on the same {@link PairedStatsAccumulator} without
   * adding any values in between the two calls, or if one is obtained from the other after
   * round-tripping through java serialization. However, floating point rounding errors mean that it
   * may be false for some instances where the statistics are mathematically equal, including

        // Test that the serialVersionUID is properly defined
        // This test verifies that the class can be instantiated and has the serial version UID
        ServletException servletException = new ServletException("Serialization test");
        ServletRuntimeException runtimeException = new ServletRuntimeException(servletException);

        // The fact that we can create the instance verifies the serialVersionUID is defined

        assertEquals(this.getClass().getName(), firstElement.getClassName());
    }

    @Test
    public void test_serialization() {
        // Test that the exception is serializable
        String message = "Serialization test";
        LdapConfigurationException exception = new LdapConfigurationException(message);

        // Test that serialVersionUID is accessible (inherited from parent)
        assertNotNull(exception);

import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link AbstractMultiset}.
 *
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 */
@SuppressWarnings("serial") // No serialization is used in this test
@GwtCompatible
@NullMarked
public class SimpleAbstractMultisetTest extends TestCase {
  @J2ktIncompatible
  @GwtIncompatible // suite
  @AndroidIncompatible // test-suite builders

    }

    @Test
    public void test_serialVersionUID() {
        // Test that the exception is serializable
        PluginException exception = new PluginException("Serialization test");

        // The exception should be serializable since it extends RuntimeException
        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_longMessage() {

    }

    @Test
    public void test_serialization() {
        // Test that the exception has serialVersionUID
        // This test verifies the exception is serializable
        String message = "Serialization test";
        UnsupportedSearchException exception = new UnsupportedSearchException(message);

        // Verify basic properties are preserved
        assertEquals(message, exception.getMessage());

And of course, it supports the same:

* data validation
* data serialization
* data documentation, etc.

This works the same way as with Pydantic models. And it is actually achieved in the same way underneath, using Pydantic.

/// info