code: public static int hashCodeAscii(byte[] bytes, int startPos, int length) {
          return !hasUnsafe() || !unalignedAccess() ?
                  hashCodeAsciiSafe(bytes, startPos, length) :
                  PlatformDependent0.hashCodeAscii(bytes, startPos, length);
      }
docs: Calculate a hash code of a byte array assuming ASCII character encoding.
  The resulting hash code will be case insensitive.
  @param bytes The array which contains the data to hash.
  @param startPos What index to start generating a hash code in {@code bytes}
  @param length The amount of bytes that should be accounted for in the computation.
  @return The hash code of {@code bytes} assuming ASCII character encoding.
  The resulting hash code will be case insensitive.