EnvRef set_node - Uberi/MineTest-API GitHub Wiki
Set node at position (node = {name="foo", param1=0, param2=0})
alias: add_node(pos, node)
set_node([position](../type/position.html) pos, [string](../type/string.html) name)
minetest.env:set_node({x=0, y=0, z=0}, "default:mese')