public function readDecimal($isCollectionElement = false)
{
if ($isCollectionElement) {
$this->readShort();
}
$scale = $this->readInt();
$value = $this->readVarint($isCollectionElement);
$len = strlen($value);
return substr($value, 0, $len - $scale) . '.' . substr($value, $len - $scale);
}