hoosiertransfer-mod-saigevers/desktopRuntime/resources/assets/minecraft/models/block/spruce_stairs.json

{
    "parent": "block/stairs",
    "textures": {
        "bottom": "blocks/planks_spruce",
        "top": "blocks/planks_spruce",
        "side": "blocks/planks_spruce"
    }
}