Method appendBitwise

bolt/common/strings/ByteStream.h:124–127

   */
  template <class T>
  size_t appendBitwise(const T* obj, size_t count) {
    const size_t sz = count * sizeof(T);
    return append(folly::StringPiece(reinterpret_cast<const char*>(obj), sz));
  }

  /**
   * Convenience function that appends the bitwise representation of a