* <p>The returned object is serializable if {@code function} is serializable.
   *
   * @param function the function to be used for loading values; must never return {@code null}
   * @return a cache loader that loads values by passing each key to {@code function}
   */
  public static <K, V> CacheLoader<K, V> from(Function<K, V> function) {
    return new FunctionToCacheLoader<>(function);
  }

  /**

			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		buckets, err := clnt.ListBuckets(r.Context())
		if err != nil {
			log.Println(fmt.Errorf("Error while listing buckets, %s", err))
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		creds, _ := sts.Get()

		bucketNames := []string{}

		for _, bucket := range buckets {

```

### Existing object replication

Existing object replication as detailed [here](https://aws.amazon.com/blogs/storage/replicating-existing-objects-between-s3-buckets/) can be enabled by passing `existing-objects` as a value to `--replicate` flag while adding or editing a replication rule.

#### Running doctest for testable docstring

There are two ways to test the code in the docstring locally:

1.  If you are only changing the docstring of a class/function/method, then you
    can test it by passing that file's path to
    [tf_doctest.py](https://www.tensorflow.org/code/tensorflow/tools/docs/tf_doctest.py).
    For example:

    ```bash
    python tf_doctest.py --file=<file_path>
    ```

        dataConfigBhv.insertOrUpdate(dataConfig, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }

    /**
     * Sets up the search conditions for listing data configurations.
     *
     * <p>This method configures the condition bean with search criteria from the pager,
     * including name wildcards, handler name wildcards, and description matching.

	// GCS storage decompresses a gzipped object by default and returns the data.
	// Refer to https://cloud.google.com/storage/docs/transcoding#decompressive_transcoding
	// Need to set `Accept-Encoding` header to `gzip` when issuing a GetObject call, to be able
	// to download the object in compressed state.
	// Calling ReadCompressed with true accomplishes that.
	object := gcs.client.Bucket(gcs.Bucket).Object(gcs.getDest(key)).ReadCompressed(true)

func (api objectAPIHandlers) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "ListObjectsV2")
	api.listObjectsV2Handler(ctx, w, r, false)
}

// listObjectsV2Handler performs listing either with or without extra metadata.
func (api objectAPIHandlers) listObjectsV2Handler(ctx context.Context, w http.ResponseWriter, r *http.Request, metadata bool) {
	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))

#       space-separated string is a well documented source of bugs and security
#       problems, so this is (mostly) avoided, by progressively accumulating
#       options in "$@", and eventually passing that to Java.
#
#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
#       see the in-line comments for details.
#

    assertThat(Strings.lenientFormat(null, 5, 6)).isEqualTo("null [5, 6]");
    assertThat(Strings.lenientFormat("%s", (Object) null)).isEqualTo("null");
  }

  @J2ktIncompatible // TODO(b/319404022): Allow passing null array as varargs
  public void testLenientFormat_nullArrayVarargs() {
    assertThat(Strings.lenientFormat("%s", (Object[]) null)).isEqualTo("(Object[])null");
  }

        directoryLeaseManager.requestDirectoryLease(directoryPath, DirectoryLeaseState.DIRECTORY_READ_HANDLE,
                DirectoryCacheScope.IMMEDIATE_CHILDREN);

        // No cached listing initially
        assertNull(directoryLeaseManager.getCachedDirectoryListing(directoryPath));

        // Setup mock files
        when(mockFile1.getName()).thenReturn("file1.txt");