code: function(streamParams) {
      const opcode = encoders.opcode('PROCESS_STREAM_PARAMS');
      const streamParamsBuffer = json2Uint16Array(streamParams);
  
      const payload = new Uint16Array(1 + streamParamsBuffer.length);
      payload.set(opcode, 0);
      payload.set(streamParamsBuffer, 1);
  
      return payload.buffer;
    }
docs: `opcode`    2 bytes (Uint16) | `streamParams`  n bytes (Uint16)