-- In the following two fields, also group:groupname will work.
nodenames = {"default:lava_source"},
neighbors = {"default:water_source", "default:water_flowing"}, -- Any of these --[[
-- In the following two fields, also group:groupname will work.
nodenames = {"default:lava_source"},
neighbors = {"default:water_source", "default:water_flowing"}, -- Any of these --[[