net.minecraft.world.gen.placementmodifier

Class
BiomePlacementModifier
BlockFilterPlacementModifier
CountMultilayerPlacementModifier
CountPlacementModifier
EnvironmentScanPlacementModifier
FixedPlacementModifier
HeightRangePlacementModifier
HeightmapPlacementModifier
NoiseBasedCountPlacementModifier
NoiseThresholdCountPlacementModifier
RandomOffsetPlacementModifier
RarityFilterPlacementModifier
SquarePlacementModifier
SurfaceThresholdFilterPlacementModifier
SurfaceWaterDepthFilterPlacementModifier

Interface
AbstractConditionalPlacementModifier
AbstractCountPlacementModifier
PlacementModifier
PlacementModifiers