code: public WrappedByteBuffer put(byte[] v, int offset, int length) {
          _autoExpand(length);
          for (int i = 0; i < length; i++) {
              _buf.put(v[offset + i]);
          }
          return this;
      }
docs: Puts segment of a single-byte array into the buffer at the current position.
  
  @param v
  the source single-byte array
  @offset
  the start position of source array
  @length
  the length to put into WrappedByteBuffer
  @return the buffer