assertEquals(I18N.length(), copied);
  }

  public void testCopy_toWriter_fromReader() throws IOException {
    StringWriter writer = new StringWriter();
    long copied = CharStreams.copy(new StringReader(ASCII), writer);
    assertEquals(ASCII, writer.toString());
    assertEquals(ASCII.length(), copied);

    StringWriter writer2 = new StringWriter();
    copied = CharStreams.copy(new StringReader(I18N), writer2);

    assertEquals(I18N.length(), copied);
  }

  public void testCopy_toWriter_fromReader() throws IOException {
    StringWriter writer = new StringWriter();
    long copied = CharStreams.copy(new StringReader(ASCII), writer);
    assertEquals(ASCII, writer.toString());
    assertEquals(ASCII.length(), copied);

    StringWriter writer2 = new StringWriter();
    copied = CharStreams.copy(new StringReader(I18N), writer2);

		case "linux":
			// Copied from golang.org/x/sys/unix/dev_linux.go.
			major := uint32((dev & 0x00000000000fff00) >> 8)
			major |= uint32((dev & 0xfffff00000000000) >> 32)
			minor := uint32((dev & 0x00000000000000ff) >> 0)
			minor |= uint32((dev & 0x00000ffffff00000) >> 12)
			h.Devmajor, h.Devminor = int64(major), int64(minor)
		case "darwin", "ios":
			// Copied from golang.org/x/sys/unix/dev_darwin.go.

package install

import (
	"os"
	"path/filepath"

	"istio.io/istio/pkg/file"
	"istio.io/istio/pkg/util/sets"
)

// Copies/mirrors any files present in a single source dir to N number of target dirs
// and returns a set of the filenames copied.
func copyBinaries(srcDir string, targetDirs []string) (sets.String, error) {
	copiedFilenames := sets.String{}
	srcFiles, err := os.ReadDir(srcDir)
	if err != nil {

      long oldPosition = sourceChannel.position();
      long position = oldPosition;
      long copied;
      do {
        copied = sourceChannel.transferTo(position, ZERO_COPY_CHUNK_SIZE, to);
        position += copied;
        sourceChannel.position(position);
      } while (copied > 0 || position < sourceChannel.size());
      return position - oldPosition;
    }

			if err != nil {
				t.Fatalf("Test %d: %s: Failed to fetch the copied object: <ERROR> %s", i+1, instanceType, err)
			}
			if _, err = io.Copy(buffer, r); err != nil {
				r.Close()
				t.Fatalf("Test %d: %s: Failed to fetch the copied object: <ERROR> %s", i+1, instanceType, err)
			}
			r.Close()
			if !bytes.Equal(testCase.data, buffer.Bytes()) {

     *
     * ## The file
     *
     * In this case we copy bytes from the file to the [sink].
     *
     * ## The buffer
     *
     * In this case the bytes are immediately copied into [sink] and the number of bytes copied is
     * returned.
     *
     * If upstream would be selected but another thread is already reading upstream this will

	// Copy on write
	dst := metadata
	var copied bool
	delKey := func(key string) {
		if _, ok := metadata[key]; !ok {
			return
		}
		if !copied {
			dst = make(map[string]string, len(metadata))
			for k, v := range metadata {
				dst[k] = v
			}
			copied = true
		}
		delete(dst, key)
	}
	legalHold := GetObjectLegalHoldMeta(metadata)

}

// CopyObjectResponse container returns ETag and LastModified of the successfully copied object
type CopyObjectResponse struct {
	XMLName      xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CopyObjectResult" json:"-"`
	LastModified string   // time string of format "2006-01-02T15:04:05.000Z"
	ETag         string   // md5sum of the copied object.
}

 * implementations.
 *
 * <p>This base implementation has no key or value pointers, so instances of ImmutableMapEntry (but
 * not its subclasses) can be reused when copied from one ImmutableMap to another.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // unnecessary
@ElementTypesAreNonnullByDefault
class ImmutableMapEntry<K, V> extends ImmutableEntry<K, V> {
  /**