src/Builder/Syntax/PlaceholderWriter.php
public function add($value)
    {
        $placeholderKey = ':v'.$this->counter;
        $this->placeholders[$placeholderKey] = $this->setValidSqlValue($value);

        ++$this->counter;

        return $placeholderKey;
    }
public function add($value)
    {
        $placeholderKey = ':v'.$this->counter;
        $this->placeholders[$placeholderKey] = $this->setValidSqlValue($value);

        ++$this->counter;

        return $placeholderKey;
    }
@param $value

@return string