According to the javadocs this is the order

1. generateNoise(WorldInfo, Random, int, int, ChunkData)
2. generateSurface(WorldInfo, Random, int, int, ChunkData)
3. generateBedrock(WorldInfo, Random, int, int, ChunkData)
4. generateCaves(WorldInfo, Random, int, int, ChunkData)

and these are the settings that you're able to override

• shouldGenerateNoise()
• shouldGenerateSurface()
• shouldGenerateBedrock()
• shouldGenerateCaves()
• shouldGenerateDecorations()
• shouldGenerateMobs()
• shouldGenerateStructures()

From my testing, if you set a chunk to air in the last generate method, there's still structures and decorations that generate inside the chunk. I don't want to just override the settings (ex. shouldGenerateStructures() ) as I still want structures, just not in that chunk. Would it be possible to add a method that runs after everything is generated? The alternative is setting the chunk to air in ChunkLoadEvent, which is annoying and laggy.