*
 * All event methods must execute fast, without external locking, cannot throw exceptions,
 * attempt to mutate the event parameters, or be reentrant back into the client.
 * Any IO - writing to files or network should be done asynchronously.
 */
internal abstract class ConnectionListener {
  /**
   * Invoked as soon as a call causes a connection to be started.
   */
  open fun connectStart(
    route: Route,
    call: Call,
  ) {}

    _os.getenv("TF_USE_MODULAR_FILESYSTEM", "0") == "1"):
  import tensorflow_io_gcs_filesystem as _tensorflow_io_gcs_filesystem

# Lazy-load Keras v2/3.
_tf_uses_legacy_keras = (
    _os.environ.get("TF_USE_LEGACY_KERAS", None) in ("true", "True", "1"))
setattr(_current_module, "keras", _KerasLazyLoader(globals()))
_module_dir = _module_util.get_parent_dir_for_name("keras._tf_keras.keras")
_current_module.__path__ = [_module_dir] + _current_module.__path__

    assertThat(get(url).body.string()).isEqualTo("B")
    assertThat(server.takeRequest().headers["If-None-Match"]).isNull()
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v1")
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v1")
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v2")
  }

  @Test
  fun combinedCacheHeadersCanBeNonAscii() {

      .assertLogMatch(Regex("""connectEnd: http/1.1"""))
      .assertLogMatch(
        Regex(
          """connectionAcquired: Connection\{${url.host}:\d+, proxy=DIRECT hostAddress=${url.host}/.+ cipherSuite=none protocol=http/1\.1\}""",
        ),
      ).assertLogMatch(Regex("""requestHeadersStart"""))
      .assertLogMatch(Regex("""requestHeadersEnd"""))
      .assertLogMatch(Regex("""responseHeadersStart"""))

    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages

    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages

/**
 * @author wyukawa
 *
 */
public class BinaryConversionUtilTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    /**
     * Test method for
     * {@link org.codelibs.core.convert.BinaryConversionUtil#toBinary(java.lang.Object)}
     * .
     */
    @Test
    public void testToBinary() {

    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages

/**
 * Internal use only
 *
 * @author mbechler
 *
 * <p>This interface is intended for internal use.</p>
 */
public enum RequestParam {

    /**
     * No special request parameters.
     */
    NONE,

    /**
     * Wait indefinitely for a response
     */
    NO_TIMEOUT,

    /**
     * Do not retry request on failure
     */
    NO_RETRY,

    /**

### Warning about replacing { #warning-about-replacing }

That means that if you want to update the item `bar` using `PUT` with a body containing:

```Python
{
    "name": "Barz",
    "price": 3,
    "description": None,
}
```

because it doesn't include the already stored attribute `"tax": 20.2`, the input model would take the default value of `"tax": 10.5`.

And the data would be saved with that "new" `tax` of `10.5`.