手册:Minecraft:tree feature/花俏的树干语法

"fancy_trunk": {
 "trunk_height": {
   "base": <par1>,
   "variance": <par2>,
   "scale": <par3>
 },
 "trunk_width": <par4>,
 "branches": {
   "slope": <par5>,
   "density": <par6>,
   "min_altitude_factor": <par7>
 },
 "trunk_block": <par8>,
 "width_scale": <par9>,
 "foliage_altitude_factor": <par10>
}