minecraft-kajetans-mod/src/main/resources/data/km/tags/items/bookshelf.json

{
    "replace": false,
    "values": [
        "minecraft:bookshelf",
        "km:bookshelf_birch",
        "km:bookshelf_spruce",
        "km:bookshelf_jungle",
        "km:bookshelf_acacia",
        "km:bookshelf_dark_oak"
    ]
}