Go 1.23 changed
[`net/http.ServeContent`](/pkg/net/http#ServeContent),
[`net/http.ServeFile`](/pkg/net/http#ServeFile), and
[`net/http.ServeFS`](/pkg/net/http#ServeFS) to
remove Cache-Control, Content-Encoding, Etag, and Last-Modified headers
when serving an error. This behavior is controlled by
the [`httpservecontentkeepheaders` setting](/pkg/net/http#ServeContent).
Using `httpservecontentkeepheaders=1` restores the pre-Go 1.23 behavior.

    if (delimiterCount < 2 || delimiterCount > IPV6_PART_COUNT) {
      return null;
    }
    int partsSkipped = IPV6_PART_COUNT - (delimiterCount + 1); // estimate; may be modified later
    boolean hasSkip = false;
    // Scan for the appearance of ::, to mark a skip-format IPV6 string and adjust the partsSkipped
    // estimate.
    for (int i = 0; i < ipString.length() - 1; i++) {

        } else {
            versionMap = new ManagedVersionMap(managedVersions);
        }

        // remove the originating artifact if it is also in managed versions to avoid being modified during resolution
        Artifact managedOriginatingArtifact = versionMap.get(originatingArtifact.getDependencyConflictId());

        if (managedOriginatingArtifact != null) {

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and

       * seen value. And while we *could* do that, we aren't required to: Map.Entry explicitly says
       * that behavior is undefined when the backing map is modified through another API. (It even
       * permits us to throw IllegalStateException. Maybe we should have done that, but we probably
       * shouldn't change now for fear of breaking people.)
       *

 * iteration ordering across rows and columns in the table's views. None of the view iterators
 * support {@link Iterator#remove}. If the table is modified after an iterator is created, the
 * iterator remains valid.
 *
 * <p>This class requires less memory than the {@link HashBasedTable} and {@link TreeBasedTable}
 * implementations, except when the table is sparse.
 *

The steps below show how to use this notification target in `namespace` format. The other format is very similar and is omitted for brevity.

### Step 1: Ensure Elasticsearch minimum requirements are met

 * }</pre>
 *
 * ... yields the substrings {@code [" foo", "", "", " bar ", ""]}. If this is not the desired
 * behavior, use configuration methods to obtain a <i>new</i> splitter instance with modified
 * behavior:
 *
 * <pre>{@code
 * private static final Splitter MY_SPLITTER = Splitter.on(',')
 *     .trimResults()
 *     .omitEmptyStrings();
 * }</pre>
 *

   * setRate} will not be affected by the new rate; it will pay the cost of the previous request,
   * which is in terms of the previous rate.
   *
   * <p>The behavior of the {@code RateLimiter} is not modified in any other way, e.g. if the {@code
   * RateLimiter} was configured with a warmup period of 20 seconds, it still has a warmup period of
   * 20 seconds after this method invocation.
   *

   * @param newCount the desired count of the element in this multiset
   * @return {@code true} if the condition for modification was met. This implies that the multiset
   *     was indeed modified, unless {@code oldCount == newCount}.
   * @throws IllegalArgumentException if {@code oldCount} or {@code newCount} is negative
   * @throws NullPointerException if {@code element} is null and the implementation does not permit