NaturesAura/src/main/resources/data/naturesaura/advancements/gold_leaf.json

{
    "display": {
        "icon": {
            "item": "naturesaura:gold_leaf"
        },
        "title": {
            "translate": "advancement.naturesaura.gold_leaf"
        },
        "description": {
            "translate": "advancement.naturesaura.gold_leaf.desc"
        }
    },
    "parent": "naturesaura:get_book",
    "criteria": {
        "leaf": {
            "trigger": "minecraft:inventory_changed",
            "conditions": {
                "items": [
                    {
                        "items": ["naturesaura:gold_leaf"]
                    }
                ]
            }
        }
    }
}