function __construct($id, DoxyGroup $parent = null, $gid = null)
{
Assert::isScalar($id);
Assert::isScalarOrNull($gid);
$this->id = $id;
$this->parent = $parent;
$this->gid = $gid ? $gid : $this->generateGid();
if ($this->parent) {
$this->parent->addInner($this);
}
}
