Extend GeneratorBuyEvent to cancellable

[rudde0]

Is your feature request related to a problem?

I want to add my custom requirements to generator buying feature.

Describe the solution you'd like.

I need to listen GeneratorBuyEvent and I have to cancel it in some situations.

Describe alternatives you've considered.

Agreements

• I have searched for and ensured there isn't already an open issue regarding this.
• I have ensured the feature I'm requesting isn't already in the latest supported BentoBox build or Addons.

Other

No response

[tastybento]

The event is called here.

It fires when the generator has already been purchased so there is no meaning to cancelation. If you need to cancel the purchase operation, then another event should be made,= and fired before the purchase is made, maybe called something like GeneratorPreBuyEvent. You could fire it immediately on entering the purchaseGenerator method. Fancy writing it and making a PR?