// See Java Puzzler #44
    // Use reflection instead of catching NoClassDefFoundError
    try {
      Class.forName(unsafeComparatorClassName());
      return true;
    } catch (Error | ClassNotFoundException tolerable) {
      /*
       * We're probably running on Android.
       *
       * A note on exception types:
       *
       * Android API level 10 throws ExceptionInInitializerError the first time and

gender identity or expression, language, national origin, political beliefs, profession, race,
religion, sexual orientation, socioeconomic status, and technical ability. We will not tolerate
discrimination based on any of the protected characteristics above, including participants with
disabilities.

Reporting Issues
----------------

/** Delete file we expect but don't require to exist. */
internal fun FileSystem.deleteIfExists(path: Path) {
  try {
    delete(path)
  } catch (fnfe: FileNotFoundException) {
    return
  }
}

/** Tolerant delete, try to clear as many files as possible even after a failure. */
internal fun FileSystem.deleteContents(directory: Path) {
  var exception: IOException? = null
  val files =
    try {
      list(directory)

pkg syscall (linux-386), type Timex struct, Tai int32
pkg syscall (linux-386), type Timex struct, Tick int32
pkg syscall (linux-386), type Timex struct, Time Timeval
pkg syscall (linux-386), type Timex struct, Tolerance int32
pkg syscall (linux-386), type Tms struct
pkg syscall (linux-386), type Tms struct, Cstime int32
pkg syscall (linux-386), type Tms struct, Cutime int32
pkg syscall (linux-386), type Tms struct, Stime int32

   * null}).
   *
   * <p>The list of results is in the same order as the input list.
   *
   * <p>This differs from {@link #allAsList(ListenableFuture[])} in that it's tolerant of failed
   * futures for any of the items, representing them as {@code null} in the result list.
   *
   * <p>Canceling this future will attempt to cancel all the component futures.
   *

 *
 * Clients call [get] to read a snapshot of an entry. The read will observe the value at the time
 * that [get] was called. Updates and removals after the call do not impact ongoing reads.
 *
 * This class is tolerant of some I/O errors. If files are missing from the filesystem, the
 * corresponding entries will be dropped from the cache. If an error occurs while writing a cache

* Add a timeout to the sshDialer to prevent indefinite hangs. ([#23843](https://github.com/kubernetes/kubernetes/pull/23843), [@cjcullen](https://github.com/cjcullen))
* AWS kube-up: tolerate a lack of ephemeral volumes ([#23776](https://github.com/kubernetes/kubernetes/pull/23776), [@justinsb](https://github.com/justinsb))

   * null}).
   *
   * <p>The list of results is in the same order as the input list.
   *
   * <p>This differs from {@link #allAsList(ListenableFuture[])} in that it's tolerant of failed
   * futures for any of the items, representing them as {@code null} in the result list.
   *
   * <p>Canceling this future will attempt to cancel all the component futures.
   *

		// resulting in a file with compressed size > 0 but uncompressed size ==
		// 0. We still want to fail when a directory has associated uncompressed
		// data, but we are tolerant of cases where the uncompressed size is
		// zero but compressed size is not.
		if f.UncompressedSize64 != 0 {
			return &dirReader{ErrFormat}, nil
		} else {
			return &dirReader{io.EOF}, nil
		}
	}

 *  Fix: Don't use brackets formatting IPv6 host names in MockWebServer.
 *  Fix: Don't permit cache iterators to remove entries that are being written.


## Version 4.0.1

_2019-07-10_

 *  Fix: Tolerate null-hostile lists in public API. Lists created with `List.of(...)` don't like it
    when you call `contains(null)` on them!
 *  Fix: Retain binary-compatibility in `okhttp3.internal.HttpHeaders.hasBody()`. Some unscrupulous