file_path.name.replace("_py39.py", "_py310.py")
        )
        if py310_file.exists():
            continue
        logging.info(f"Copying file {file_path} -> {py310_file}")
        shutil.copy2(file_path, py310_file)


@app.command()
def update_docs_includes_py39_to_py310() -> None:
    """
    Update .md files in docs/en/ to replace _py39 includes with _py310 versions.

                // Create copy with varying number of chunks
                SrvCopychunk[] chunks = Arrays.copyOf(testCases, numChunks);
                SrvCopychunkCopy copy = new SrvCopychunkCopy(sourceKey, chunks);
                byte[] buffer = new byte[500];

                // When
                int expectedSize = copy.size();
                int actualEncoded = copy.encode(buffer, 0);

                // Then

        }
        return total;
      }
    },
    NEW {
      @Override
      long copy(Readable from, Appendable to) throws IOException {
        return CharStreams.copy(from, to);
      }
    };

    abstract long copy(Readable from, Appendable to) throws IOException;
  }

  enum TargetSupplier {
    STRING_WRITER {
      @Override
      Appendable get(int sz) {
        return new StringWriter(sz);

		}
	}
	if !ok {
		return io.Copy(w, struct{ io.Reader }{sr})
	}

	var writeLastByte bool
	pos0 := sr.pos
	for sr.logicalRemaining() > 0 && !writeLastByte && err == nil {
		var nf int64 // Size of fragment
		holeStart, holeEnd := sr.sp[0].Offset, sr.sp[0].endOffset()
		if sr.pos < holeStart { // In a data fragment
			nf = holeStart - sr.pos
			nf, err = io.CopyN(ws, sr.fr, nf)
		} else { // In a hole fragment

    SortedSet<String> set = new SafeTreeSet<>();
    SortedSet<String> copy = SerializableTester.reserializeAndAssert(set);
    assertEquals(set.comparator(), copy.comparator());
  }

  @GwtIncompatible // SerializableTester
  public void testSingle_serialization() {
    SortedSet<String> set = new SafeTreeSet<>();
    set.add("e");
    SortedSet<String> copy = SerializableTester.reserializeAndAssert(set);

                        final Smb2IoctlRequest copy = new Smb2IoctlRequest(sh.getConfig(),
                                write ? Smb2IoctlRequest.FSCTL_SRV_COPYCHUNK_WRITE : Smb2IoctlRequest.FSCTL_SRV_COPYCHUNK, dfd.getFileId());
                        copy.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);
                        copy.setInputData(new SrvCopychunkCopy(resumeKey, chunkInfo));

                  </fileset>
                </copy>
                <copy toDir="${project.build.directory}/guava-gwt-sources">
                  <fileset dir="${project.build.directory}/failureaccess-sources">
                    <include name="**/InternalFutures.java" />
                  </fileset>
                </copy>
                <copy toDir="${project.build.directory}/guava-gwt-sources">

    original.add("two");
    original.add("three");

    EvictingQueue<String> copy = SerializableTester.reserialize(original);
    assertEquals(copy.maxSize, original.maxSize);
    assertThat(copy.remove()).isEqualTo("one");
    assertThat(copy.remove()).isEqualTo("two");
    assertThat(copy.remove()).isEqualTo("three");
    assertTrue(copy.isEmpty());
  }

  }

  public void testCopyOfEmptyMap() {
    ImmutableSortedMap<String, Integer> copy =
        ImmutableSortedMap.copyOf(Collections.<String, Integer>emptyMap());
    assertEquals(Collections.<String, Integer>emptyMap(), copy);
    assertThat(ImmutableSortedMap.copyOf(copy)).isSameInstanceAs(copy);
    assertThat(copy.comparator()).isEqualTo(Ordering.natural());
  }

  public void testCopyOfSingletonMap() {

    return copy(readTimeoutMillis = checkDuration("readTimeout", timeout.toLong(), unit))
  }

  override fun writeTimeoutMillis(): Int = writeTimeoutMillis

  override fun withWriteTimeout(
    timeout: Int,
    unit: TimeUnit,
  ): Interceptor.Chain {
    check(exchange == null) { "Timeouts can't be adjusted in a network interceptor" }