#Sets the DimensionDefinition object for dimension 0 and stores it as a variable
dimension0 = setDimensionDefinition(0)

#Sets the ChunkGenerator type to "Sky_Islands" and gets the ChunkGeneratorDefinition which we store as a variable for no real reason
skyIslands = dimension0.setChunkGeneratorDefinition("Sky_Islands")

#Sets the BiomeProvider to be used for the dimension to be of type "Single" and use biome "forest"
dimension0.setBiomeProviderSingle("forest")