Link to minecartinteract
MinecartInteractEvent is fired whenever a player begins to interact with a minecart. The event is cancelable, and doing so will prevent the container from being opened.
Link to event-class
You will need to cast the event in the function header as this class:
You can, of course, also import the class before and use that name then.
Event interface extensions
Link to event-interface-extensions
MinecartInteract Events implement the following interfaces and are able to call all of their methods/getters/setters as well:
Link to zengetters