What is the difference between org.spongepowered.api.event.Order‘s members’ being readonly vs. cancelable? (See Order.FIRST and Order.LAST) I know that in a cancelable time, you can call setCancelled(true), but what does readonly do, and when it used?
Those javadocs are pretty outdated, having been around since the early days of Sponge. Right now, ‘readonly’ isn’t actually implemented - you can cancel at any phase you want.
We may be revisiting Order in the future, especially with some possible upcoming changes to plugin dependency handling.