src/Request/Batch.php
public function getBody() {
        return pack('C', $this->_batchType)
            . pack('n', count($this->_queryArray)) . implode('', $this->_queryArray)
            . self::queryParameters($this->_consistency, $this->_options);
    }
public function getBody() {
        return pack('C', $this->_batchType)
            . pack('n', count($this->_queryArray)) . implode('', $this->_queryArray)
            . self::queryParameters($this->_consistency, $this->_options);
    }
Exec transaction