what does `ServerEvents.modifyRecipeIngredient` even do?

[visual glen]

There is few things inside event, like crafting grid, but what is extra as event register argument?

[heavy bone]

Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!

[kindred basin]

ServerEvents.modifyRecipeIngredient make use of the same class as ServerEvents.modifyRecipeResult, which is ModifyCraftingItemKubeEvent
This is actually the first time I even hear about modifyRecipeIngredient, its pretty much unused by the community, but going by what modifyRecipeResult does, which allows you to make a callback on recipe attempt and add or remove arbitrary code, such as copying enchantments/components from ingredient in recipe to recipe result, then modifyRecipeIngredient similarily should allow you to alter the ingredients on recipe craft; perhaps allowing something akin to the old Ender Shards from Extra Utilities (1) that had 8 uses that ticked down on crafts, disappearing on reaching 0

[visual glen]

so extra is recipe ID?

[kindred basin]

I have no experience with the Ingredient version, but here's one of my own scripts that use .modifyRecipeResult, which again uses the same class

ServerEvents.recipes(event => {
    event.shapeless(Item.of('project_unknown:cloak_of_perception', 1),
    [
        'project_unknown:cloak_of_perception',
        '#project_unknown:cloak_filters'
    ]
    ).modifyResult('project_unknown:cloak_filter_edit') //custom ID to use later in modifyRecipeResult callback
})

ServerEvents.modifyRecipeResult('project_unknown:cloak_filter_edit', event => {

    let cloak = event.grid.find('project_unknown:cloak_of_perception')
    let skull = event.grid.find('#project_unknown:cloak_filters')

    let oldFilter = cloak.getComponents().get($DataComponents.CUSTOM_DATA).copyTag().getString('project_unknown:mobfilter')

    if(cloak_filters.containsKey(skull.id) && !oldFilter.includes(cloak_filters.get(skull.id))){
        let padding = ','
        if(oldFilter.length() == 0)
            padding = ''
        oldFilter += padding + cloak_filters.get(skull.id)

        let newTag = cloak.getComponents().get($DataComponents.CUSTOM_DATA).copyTag()
        newTag.putString('project_unknown:mobfilter', oldFilter)
        $CustomData.set($DataComponents.CUSTOM_DATA, cloak, newTag)
        event.success(cloak)
    }
    event.success(Item.of('air')) //returns an empty itemstack that cannot be clicked, if recipe fails
})

[visual glen]

oh, it's just an ID for modifier then