https://apidoc-dev.pmmp.io/d8/d3b/classpocketmine_1_1network_1_1mcpe_1_1protocol_1_1types_1_1inventory_1_1stackrequest_1_1_item_stack_request_action.html
PocketMine-MP: pocketmine\network\mcpe\protocol\types\inventory\stackrequest\ItemStackRequestAction...
pocketmine mpnetworkmcpeprotocoltypes