{
    "resource_pack_name": "vanilla",
    "texture_name": "atlas.items",
    "texture_data": {
        "custombooks:test0":{
            "textures": "textures/items/custom_book"
        },
        "custombooks:addrbook":{
            "textures": "textures/items/addr_book"
        }, 
        "custombooks:recyclebook":{
            "textures": "textures/items/recycle_book"
        }               
    }
}