Some requests will have a cached response. When this cached response isn’t fresh, OkHttp can do a _conditional GET_ to download an updated response if it’s newer than what’s cached. This requires headers like `If-Modified-Since` and `If-None-Match` to be added.

## Rewriting Responses

	// In the now deprecated PutBucketLifecycle API, Rule had a mandatory Prefix element and there existed no Filter field.
	// See https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycle.html
	// In the newer PutBucketLifecycleConfiguration API, Rule has a prefix field that is deprecated, and there exists an optional
	// Filter field, and within it, an optional Prefix field.

                left + " should be older than " + right);
        assertTrue(
                newArtifactVersion(right).compareTo(newArtifactVersion(left)) > 0,
                right + " should be newer than " + left);
    }

    private void assertVersionEqual(String left, String right) {
        assertTrue(
                newArtifactVersion(left).compareTo(newArtifactVersion(right)) == 0,

 * are provided.
 * <p>
 * The jCIFS client maps DOS error codes to NTSTATUS codes. This means that
 * the user may receive a different error from a legacy server than that of
 * a newer variant such as Windows NT and above. If you should encounter
 * such a case, please report it to jcifs at samba dot org and we will
 * change the mapping.
 */

    should not use them for communication between trusted and untrusted code.

6.  For the mainline flavor, we test the libraries using OpenJDK 8, 11, and 17
    on Linux, with some additional testing on newer JDKs and on Windows. Some
    features, especially in `com.google.common.io`, may not work correctly in
    non-Linux environments. For the Android flavor, our unit tests also run on
    API level 23 (Marshmallow).

    // with MD5 or 512-bit RSA; that's insecure!
    //
    // openssl req \
    //   -x509 \
    //   -md5 \
    //   -nodes \
    //   -days 1 \
    //   -newkey rsa:512 \
    //   -keyout privateKey.key \
    //   -out certificate.crt
    val certificatePem =
      """
      |-----BEGIN CERTIFICATE-----
      |MIIBFzCBwgIJAIVAqagcVN7/MA0GCSqGSIb3DQEBBAUAMBMxETAPBgNVBAMMCGNh

      if (existing != null) {
        return existing;
      }
      L created = supplier.get();
      ArrayReference<L> newRef = new ArrayReference<>(created, index, queue);
      while (!locks.compareAndSet(index, existingRef, newRef)) {
        // we raced, we need to re-read and try again
        existingRef = locks.get(index);
        existing = existingRef == null ? null : existingRef.get();

                    Version.V20,
                    "modelVersion",
                    null,
                    "of '" + string + "' is newer than the versions supported by this version of Maven: " + values
                            + ". Building this project requires a newer version of Maven.",
                    tracker);

        } else if (olderThanAll) {

pkg crypto/hpke, func NewHybridPublicKey(crypto.Encapsulator, *ecdh.PublicKey) (PublicKey, error) #75300
pkg crypto/hpke, func NewKDF(uint16) (KDF, error) #75300
pkg crypto/hpke, func NewKEM(uint16) (KEM, error) #75300
pkg crypto/hpke, func NewMLKEMPrivateKey(crypto.Decapsulator) (PrivateKey, error) #75300
pkg crypto/hpke, func NewMLKEMPublicKey(crypto.Encapsulator) (PublicKey, error) #75300

R8 / ProGuard
-------------

R8 and ProGuard are both code optimizers for `.class` files.

R8 is the [default optimizer][r8] in Android Studio 3.4 and newer. It works well with all
releases of OkHttp.

ProGuard was the previous default. We’re [tracking problems][proguard_problems] with interactions