/** * 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); }