/**
* @param INode $node
* @return $this
* @throws \InvalidArgumentException
*/
public function append(INode $node)
{
if (in_array($node->nodeName(), $this->allowableChildren)) {
$max = $this->maximumChildren();
if ($max > 0 && count($this->children) >= $max) {
throw new \LogicException('Node of type "' . $this->nodeName() . '" already has it\'s ' . 'maximum of "' . $max . '" children. Cannot append child with definition "' . (string) $node . '"');
}
$node->setParent($this);
$this->children[] = $node;
return $this;
}
throw new \InvalidArgumentException(sprintf('Node "%s" cannot be added to "%s". Allowable child nodes: ["%s"].', $node->nodeName(), $this->nodeName(), implode('", "', $this->getAllowableChildren())));
}
