Struct IngredientTestEvent 

pub struct IngredientTestEvent<'a> {
    pub kind: &'a str,
    pub data: &'a BTreeMap<JavaString, Tag>,
    pub stack: &'a ItemStack,
    pub accept: bool,
}

What Hooks::ingredient_test is told. Each field is that hook’s argument of the same name, described in the hook’s doc.

Fields

kind: &'a str

data: &'a BTreeMap<JavaString, Tag>

stack: &'a ItemStack

accept: bool