{ "_fv": 66, "_type": "feature", "definition": { "skipPlacement": false, "generationStep": "SURFACE_STRUCTURES", "restrictionBiomes": [ { "value": "CUSTOM:Mushrooms" } ], "featurexml": "9673This block represents a block patch feature. The blocks will only generate in valid positions (for example, grass will never generate on a stone block). Patches of plants should be generated during the VEGETAL_DECORATION stage.Blocks.WARPED_FUNGUSThis is the block being placed.This condition is checked for every block that is being placed. Here we don't want the mushrooms to replace other blocksWe add a biome filter, so that the patches don't generate outside of the current biome1" } }