FeatureType:
| "minecraft:single_block_feature"
| "minecraft:tree_feature"
| "minecraft:aggregate_feature"
| "minecraft:scatter_feature"
| "minecraft:sequence_feature"
| "minecraft:search_feature"
| "minecraft:snap_to_surface_feature"
| "minecraft:growing_plant_feature"
| "minecraft:multiface_feature"
| "minecraft:nether_cave_carver_feature"
| "minecraft:partially_exposed_blob_feature"
| "minecraft:surface_relative_threshold_feature"
| "minecraft:cave_carver_feature"
| "minecraft:fossil_feature"
| "minecraft:geode_feature"
| "minecraft:hell_mountain_feature"
| "minecraft:ore_feature"
| "minecraft:rect_layout_feature"
| "minecraft:scan_surface_feature"
| "minecraft:structure_template_feature"
| "minecraft:vegetation_patch_feature"
| "minecraft:weighted_random_feature"
| string
The full JSON root key identifying the type of world generation feature.