/**
* Process provided command object
*
* @param \Magento\Backend\Model\Menu\Builder\AbstractCommand $command
* @return $this
*/
public function processCommand(\Magento\Backend\Model\Menu\Builder\AbstractCommand $command)
{
if (!isset($this->_commands[$command->getId()])) {
$this->_commands[$command->getId()] = $command;
} else {
$this->_commands[$command->getId()]->chain($command);
}
return $this;
}
/**
* Add command as last in the list of callbacks
*
* @param \Magento\Backend\Model\Menu\Builder\AbstractCommand $command
* @return $this
* @throws \InvalidArgumentException
*/
public function chain(\Magento\Backend\Model\Menu\Builder\AbstractCommand $command)
{
if ($command instanceof \Magento\Backend\Model\Menu\Builder\Command\Add) {
throw new \InvalidArgumentException("Two 'add' commands cannot have equal id (" . $command->getId() . ")");
}
return parent::chain($command);
}