}
    return result;
  }

  /**
   * Reads all bytes from an input stream into a byte array. Does not close the stream.
   *
   * <p><b>Java 9+ users:</b> use {@code in#readAllBytes()} instead.
   *
   * @param in the input stream to read from
   * @return a byte array containing all the bytes from the stream
   * @throws IOException if an I/O error occurs
   */

    return asByteSink(file, modes).asCharSink(charset);
  }

  /**
   * Reads all bytes from a file into a byte array.
   *
   * <p><b>{@link java.nio.file.Path} equivalent:</b> {@link java.nio.file.Files#readAllBytes}.
   *
   * @param file the file to read from
   * @return a byte array containing all the bytes from file
   * @throws IllegalArgumentException if the file is bigger than the largest possible byte array

        }

        // TODO: shouldn't have to trim, sha files should not have trailing newline
        byte[] fileBytes = Files.readAllBytes(shaFile.toPath());
        String expectedSha = new String(fileBytes, StandardCharsets.UTF_8).trim();

        String sha = getSha1(jar);

        if (expectedSha.equals(sha) == false) {

            if (is == null) {
                throw new IOException("Resource not found: suggest_indices/suggest/mappings-default.json");
            }
            return new String(is.readAllBytes(), StandardCharsets.UTF_8);
        }
    }

    private String getDefaultIndexSettings() throws IOException {

            assertTrue("Thread dump file should not be empty", Files.size(tempFile) > 0);

            // Verify the content contains thread information
            String content = new String(Files.readAllBytes(tempFile), Constants.CHARSET_UTF_8);
            assertTrue("Content should contain 'Thread:'", content.contains("Thread:"));
            assertTrue("Content should contain stack trace elements", content.contains("\tat "));

            tempChecksumFile.deleteOnExit();
            wagon.get(remotePath + checksumFileExtension, tempChecksumFile);
            byte[] bytes = Files.readAllBytes(tempChecksumFile.toPath());
            String expectedChecksum = new String(bytes, StandardCharsets.UTF_8);

            // remove whitespaces at the end
            expectedChecksum = expectedChecksum.trim();