docs: @Draft
      public Object[] recvPicture(Socket socket, String picture)
      {
          if (!FORMAT.matcher(picture).matches()) {
              throw new ZMQException(picture + " is not in expected format " + FORMAT.pattern(), ZError.EPROTO);
          }
          Object[] elements = new Object[picture.length()];
          for (int index = 0; index < picture.length(); index++) {
              char pattern = picture.charAt(index);
              switch (pattern) {
              case 'i': {
                  elements[index] = Integer.valueOf(socket.recvStr());
                  break;
              }
              case '1': {
                  elements[index] = (0xff) & Integer.valueOf(socket.recvStr());
                  break;
              }
              case '2': {
                  elements[index] = (0xffff) & Integer.valueOf(socket.recvStr());
                  break;
              }
              case '4': {
                  elements[index] = (0xffffffff) & Integer.valueOf(socket.recvStr());
                  break;
              }
              case '8': {
                  elements[index] = Long.valueOf(socket.recvStr());
                  break;
              }
              case 's': {
                  elements[index] = socket.recvStr();
                  break;
              }
              case 'b':
              case 'c': {
                  elements[index] = socket.recv();
                  break;
              }
              case 'f': {
                  elements[index] = ZFrame.recvFrame(socket);
  
                  break;
              }
              case 'm': {
                  elements[index] = ZMsg.recvMsg(socket);
                  break;
              }
              case 'z': {
                  ZFrame zeroFrame = ZFrame.recvFrame(socket);
                  if (zeroFrame == null || zeroFrame.size() > 0) {
                      throw new ZMQException("zero frame is not empty", ZError.EPROTO);
                  }
                  elements[index] = new ZFrame((byte[]) null);
                  break;
              }
              default:
                  assert (false) : "invalid picture element '" + pattern + "'";
              }
          }
          return elements;
      }