code: public String fromByteArray(byte[] bytes) {
      java.util.Objects.requireNonNull(bytes, "bytes");
      return fromByteArray(bytes, 0, bytes.length);
    }
docs: Returns a hexadecimal string representation of each bytes of {@code bytes}.
  
  @param bytes a bytes to convert
  @return a hexadecimal string representation of each bytes of {@code bytes}